| 14.9 NMAC, Mechanical Codes (Title 14, Chapter 9) | Construction Industries Division, New Mexico Regulation and Licensing Department | Free online document | Not stated | 3 |
| 2006 International Plumbing Code (Softcover Version) | Cengage Delmar Learning | Code or standard | Not stated | 1 |
| 2010 ADA Standards for Accessible Design | U.S. Department of Justice | Free online document | Not stated | 1 |
| 2012 International Fuel Gas Code | International Code Council | Code or standard | Not stated | 2 |
| 2012 International Mechanical Code | International Code Council | Code or standard | Not stated | 2 |
| 2012 Study Guide for Structural Steel Trainee Guide | Pearson Custom Library | Book | Not stated | 3 |
| 2015 International Building Code | International Code Council | Code or standard | Not stated | 4 |
| 2015 International Energy Conservation Code | International Code Council | Code or standard | Not stated | 2 |
| 2015 International Fuel Gas Code | International Code Council | Code or standard | Not stated | 1 |
| 2015 International Mechanical Code | International Code Council | Code or standard | Not stated | 2 |
| 2015 International Residential Code for One- and Two-Family Dwellings | International Code Council | Code or standard | Not stated | 5 |
| 2017 TCNA Handbook for Ceramic, Glass, and Stone Tile Installation | Tile Council of North America (TCNA) | Book | Not stated | 1 |
| 2018 International Building Code | International Code Council | Code or standard | Not stated | 28 |
| 2018 International Energy Conservation Code | International Code Council | Code or standard | Not stated | 5 |
| 2018 International Existing Building Code | International Code Council | Code or standard | Not stated | 4 |
| 2018 International Fuel Gas Code | International Code Council | Code or standard | Not stated | 20 |
| 2018 International Mechanical Code | International Code Council | Code or standard | Not stated | 16 |
| 2018 International Plumbing Code | ICC | Code or standard | Not stated | 12 |
| 2018 International Residential Code for One- and Two-Family Dwellings | International Code Council | Code or standard | Not stated | 19 |
| 2018 New Jersey National Standard Plumbing Code Illustrated | IAPMO | Code or standard | Not stated | 1 |
| 2018 Uniform Plumbing Code | International Association of Plumbing and Mechanical Officials (IAPMO) | Code or standard | Not stated | 5 |
| 2018 Uniform Solar, Hydronics and Geothermal Code | IAPMO | Code or standard | Not stated | 1 |
| 2018 Uniform Swimming Pool, Spa and Hot Tub Code | IAPMO | Code or standard | Not stated | 1 |
| 2020 Key Word Index | Tom Henry’s Code Electrical Classes Inc. | Book | Not stated | 1 |
| 2020 Minnesota Accessibility Code | International Code Council | Code or standard | Not stated | 1 |
| 2020 Minnesota Building Code | International Code Council | Code or standard | Not stated | 1 |
| 2020 Minnesota Mechanical and Fuel Gas Code | International Code Council | Code or standard | Not stated | 1 |
| 2020 Minnesota Plumbing Code | IAPMO | Code or standard | Not stated | 2 |
| 2020 Minnesota Residential Code | International Code Council | Code or standard | Not stated | 5 |
| 2020 New Mexico Electrical Code (14.10.4 NMAC) | Construction Industries Division of the New Mexico Regulation and Licensing Department | Free online document | Not stated | 1 |
| 2020 New Mexico Electrical Code (14.10.4 NMAC), 2017 | Construction Industries Division of the New Mexico Regulation and Licensing Department | Free online document | Not stated | 1 |
| 2020 New Mexico Electrical Code (14.10.4 NMAC) | Construction Industries Division of the New Mexico Regulation and Licensing Department | Free online document | Not stated | 1 |
| 2021 International Building Code | ICC (distributed by Cengage Learning) | Code or standard | Not stated | 34 |
| 2021 International Energy Conservation Code | ICC | Code or standard | Not stated | 8 |
| 2021 International Existing Building Code | International Code Council | Code or standard | Not stated | 4 |
| 2021 International Fuel Gas Code | ICC | Code or standard | Not stated | 30 |
| 2021 International Mechanical Code | ICC | Code or standard | Not stated | 25 |
| 2021 International Plumbing Code | International Code Council | Code or standard | Not stated | 13 |
| 2021 International Residential Code | International Code Council | Code or standard | Not stated | 35 |
| 2021 Michigan Mechanical Code | International Code Council | Code or standard | Not stated | 2 |
| 2021 Michigan Plumbing Code: Incorporating the 2021 Edition of the International Plumbing Code | International Code Council | Code or standard | Not stated | 1 |
| 2021 New Mexico Commercial Building Code (14.7.2 NMAC) | Construction Industries Division, New Mexico Regulation and Licensing Department | Free online document | Not stated | 2 |
| 2021 New Mexico Commercial Building Code (14.7.2 NMAC) | Construction Industries Division of the New Mexico Regulation and Licensing Department | Free online document | Not stated | 1 |
| 2021 New Mexico Mechanical Code (14.9.2 NMAC), 2015 | Construction Industries Division of the New Mexico Regulation and Licensing Department | Free online document | Not stated | 1 |
| 2021 New Mexico Plumbing Code (14.8.2 NMAC) | Construction Industries Division, New Mexico Regulation and Licensing Department | Free online document | Not stated | 2 |
| 2021 New Mexico Plumbing Code (14.8.2 NMAC), 2015 | Construction Industries Division of the New Mexico Regulation and Licensing Department | Free online document | Not stated | 1 |
| 2021 New Mexico Plumbing Code (14.8.2 NMAC) | Construction Industries Division of the New Mexico Regulation and Licensing Department | Free online document | Not stated | 1 |
| 2021 New Mexico Residential Building Code (14.7.3 NMAC) | Construction Industries Division of the New Mexico Regulation and Licensing Department | Free online document | Not stated | 1 |
| 2021 New Mexico Residential Building Code (14.7.3 NMAC) | New Mexico Construction Industries Division | Free online document | Not stated | 2 |
| 2021 Uniform Mechanical Code | IAPMO Group | Code or standard | Not stated | 4 |
| 2021 Uniform Plumbing Code | International Association of Plumbing and Mechanical Officials | Code or standard | Not stated | 4 |
| 2021 Uniform Plumbing Code | IAPMO | Code or standard | Not stated | 1 |
| 2023 Key Word Index | Code Electrical | Book | Not stated | 4 |
| 2024 International Building Code | ICC | Code or standard | Not stated | 8 |
| 2024 International Fuel Gas Code | ICC | Code or standard | Not stated | 9 |
| 2024 International Mechanical Code | International Code Council | Code or standard | Not stated | 6 |
| 2024 International Plumbing Code | International Code Council | Code or standard | Not stated | 4 |
| 2024 International Residential Code | International Code Council | Code or standard | Not stated | 5 |
| 2024 Ohio Mechanical Code | International Code Council | Code or standard | Not stated | 1 |
| 2024 Ohio Plumbing Code | International Code Council | Code or standard | Not stated | 1 |
| 2024 Uniform Mechanical Code | IAPMO | Code or standard | Not stated | 1 |
| 2024 Uniform Plumbing Code | IAPMO | Code or standard | Not stated | 1 |
| 2026 Key Word Index | Not stated | Book | Not stated | 2 |
| 220 CMR 99.00: Procedures for the Determination and Enforcement of Violations of Safety Codes Pertaining to Damage Prevention | Massachusetts Department of Public Utilities | Free online document | Not stated | 2 |
| 225 CMR: Department of Energy Resources regulations | Massachusetts Department of Energy Resources | Free online document | Not stated | 2 |
| 527 CMR 12.00: Massachusetts Electrical Code (Amendments) | Massachusetts Board of Fire Prevention Regulations | Free online document | Not stated | 2 |
| 780 CMR: Massachusetts State Building Code, Tenth Edition, Base Volume, 10th edition | Massachusetts Board of Building Regulations and Standards | Free online document | Not stated | 2 |
| 780 CMR: Massachusetts State Building Code, Tenth Edition, Residential Volume (chapter 51), 10th edition | Massachusetts Board of Building Regulations and Standards | Free online document | Not stated | 2 |
| ACI CODE-318-19(22): Building Code Requirements for Structural Concrete and Commentary (Reapproved 2022) | American Concrete Institute | Code or standard | Not stated | 1 |
| ACI CODE-318-19(22): Building Code Requirements for Structural Concrete and Commentary (Reapproved 2022), 318-19 (22) | American Concrete Institute | Code or standard | Not stated | 1 |
| ACI CODE-318-19(22): Building Code Requirements for Structural Concrete and Commentary (Reapproved 2022), ACI 318-19 (22) | American Concrete Institute | Code or standard | Not stated | 1 |
| AIA Document A201-2017, General Conditions of the Contract for Construction | The American Institute of Architects | Code or standard | Not stated | 4 |
| AIA Document A401-2017, Standard Form of Agreement Between Contractor and Subcontractor | The American Institute of Architects | Code or standard | Not stated | 4 |
| AIA Document A701-2018, Instructions to Bidders | The American Institute of Architects | Code or standard | Not stated | 4 |
| Air Conditioning and Refrigeration Troubleshooting Handbook | Prentice Hall | Book | Not stated | 1 |
| American Electricians’ Handbook, 17th Edition | McGraw-Hill Education | Book | Not stated | 15 |
| Americans with Disabilities Act of 1990, As Amended | U.S. Department of Justice, Civil Rights Division (ADA.gov) | Free online document | Not stated | 1 |
| ANSI A108/A118/A136.1: American National Standard Specifications for the Installation of Ceramic Tile, 2017 | Tile Council of North America (TCNA) | Code or standard | Not stated | 1 |
| ANSI/EIMA 99-A-2017: Standard for Exterior Insulation and Finish Systems (EIFS) and EIFS with Drainage | EIFS Industry Members Association | Code or standard | Not stated | 4 |
| Antenna Toolkit, 2nd edition | Newnes | Book | Not stated | 2 |
| Antidiscrimination and Labor Rules (Utah Administrative Code, Title R608) | Utah Labor Commission | Free online document | Not stated | 1 |
| Architectural Sheet Metal Manual | Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA) | Book | Not stated | 2 |
| Arizona Administrative Code, Title 18, Chapter 9: Water Pollution Control | Arizona Department of Environmental Quality | Free online document | Not stated | 1 |
| Arkansas Fuel Gas Code, 2018 | International Code Council | Code or standard | Not stated | 1 |
| Arkansas Plumbing Code, 2018 | International Code Council | Code or standard | Not stated | 1 |
| ASTM Masonry Standards for the Building Industry, 9th edition | ASTM International | Book | Not stated | 1 |
| Backflow Prevention: Theory and Practice | Kendall Hunt Publishing Company | Book | Not stated | 1 |
| Blueprint Reading and Drafting for Plumbers | Cengage Delmar Learning | Book | Not stated | 1 |
| Board’s Rules for the Implementation of the Electrical Contracting Licensing Act (21 NCAC 18B) | Not stated | Free online document | Not stated | 1 |
| Boiler Operator’s Guide, 5th edition | McGraw Hill | Book | Not stated | 3 |
| Boilers (14.9.4 NMAC), New Mexico Boiler Rules and Regulations, 2005 | Construction Industries Division of the New Mexico Regulation and Licensing Department | Free online document | Not stated | 1 |
| Builder’s Guide to Accounting, Revised edition | Craftsman Book Company | Book | Not stated | 6 |
| Building Code Requirements and Specification for Masonry Structures (TMS 402/602-13; ACI 530/530.1-13), 2013 | The Masonry Society | Book | Not stated | 6 |
| Building Code Requirements for Structural Concrete (ACI 318-19) and Commentary (ACI 318R-19), 2019 | American Concrete Institute | Code or standard | Not stated | 10 |
| Building Component Safety Information (BCSI) Guide, 2025 Edition | Structural Building Components Association | Book | Not stated | 19 |
| Burglar Alarm Licensing Rule (Utah Admin. Code R156-55d) | State of Utah, Title R156 Professional Licensing | Free online document | Not stated | 1 |
| CCTV: From Light to Pixels, 3rd edition | Butterworth-Heinemann (Elsevier) | Book | Not stated | 4 |
| Centralized New Hire Registry Act (Utah Code, Title 35A, Chapter 7) | Utah State Legislature | Free online document | Not stated | 1 |
| Chapter 19.28 RCW: Electricians and Electrical Installations | Washington State Legislature | Free online document | Not stated | 3 |
| Chapter 296-46B WAC: Electrical Safety Standards, Administration, and Installation | Washington State Legislature | Free online document | Not stated | 3 |
| Chapter 51-56 WAC: State Building Code Adoption and Amendment of the 2021 Edition of the Uniform Plumbing Code | Washington State Legislature (Washington Administrative Code, Title 51) | Free online document | Not stated | 1 |
| Chicago Electrical Code (Chicago Title 14E), based on the 2017 NEC (NFPA 70), 2018 Edition | National Fire Protection Association | Code or standard | Not stated | 1 |
| Cleaning Brickwork (Technical Notes on Brick Construction 20) | Brick Industry Association | Free online document | Not stated | 1 |
| CLIC International Cosmetology Career Concepts: Practical Skills | CLIC International | Book | Not stated | 2 |
| Code of Federal Regulations, Title 24, Parts 3280, 3282 and 3285 | U.S. Department of Housing and Urban Development | Free online document | Not stated | 1 |
| Code of Federal Regulations, Title 24, Parts 3280, 3282, 3285 and 3286 | U.S. Department of Housing and Urban Development | Free online document | Not stated | 2 |
| Concrete and Clay Roof Tile Installation Manual, 2015 | Tile Roofing Industry Alliance (TRI Alliance) | Free online document | Not stated | 1 |
| Concrete Construction Level 2 Trainee Guide, 2nd edition | NCCER (published by Pearson) | Book | Not stated | 1 |
| Concrete Manual: Concrete Quality and Field Practices, 2024 / 2021 IBC and ACI 318-19 | International Code Council | Book | Not stated | 4 |
| Connecticut General Statutes, Section 29-261: Qualifications of building official and assistant building officials. Powers and duties. Return of building plans and specifications | Connecticut General Assembly | Free online document | Not stated | 1 |
| Construction Contracting: A Practical Guide to Company Management, 8th Edition | Wiley | Book | Not stated | 1 |
| Construction Jobsite Management, 5th edition | Cengage | Book | Not stated | 5 |
| Construction Jobsite Management | Delmar Cengage Learning | Book | Not stated | 1 |
| Construction Lien Act, Act 497 of 1980 | Michigan Legislature | Free online document | Not stated | 1 |
| Contractor’s Guide to Quality Concrete Construction (MNL-5), 4th Edition | American Concrete Institute | Book | Not stated | 26 |
| Contractors License Requirements (14.6.3 NMAC) | Construction Industries Division of the New Mexico Regulation and Licensing Department | Free online document | Not stated | 1 |
| Contractors’ Business and Law Reference Manual | Idaho Division of Occupational and Professional Licenses | Free online document | Not stated | 3 |
| Control Systems for Heating, Ventilating, and Air Conditioning | Springer-Verlag New York Inc | Book | Not stated | 2 |
| Convert Your Home to Solar Energy | Taunton Press | Book | Not stated | 1 |
| Corrections and changes (ERRATA) to 2020 Minnesota Building Codes | Minnesota Department of Labor and Industry | Free online document | Not stated | 1 |
| Data, Voice and Video Cabling, 3rd edition | Cengage | Book | Not stated | 6 |
| Design and Control of Concrete Mixtures, 17th edition | American Cement Association | Book | Not stated | 10 |
| Design and Control of Concrete Mixtures, 17th Edition | Portland Cement Association | Book | Not stated | 1 |
| Developing Your Stormwater Pollution Prevention Plan: A Guide for Construction Sites | U.S. Environmental Protection Agency | Free online document | Not stated | 1 |
| Developing Your Stormwater Pollution Prevention Plan: A Guide for Construction Sites | U.S. Environmental Protection Agency | Free online document | Not stated | 1 |
| Developing Your Stormwater Pollution Prevention Plan: A Guide for Construction Sites | U.S. Environmental Protection Agency | Free online document | Not stated | 1 |
| Developing Your Stormwater Pollution Prevention Plan: A Guide for Construction Sites | U.S. Environmental Protection Agency | Free online document | Not stated | 2 |
| Division of Occupational and Professional Licensing Act, Utah Code Title 58, Chapter 1 | Utah State Legislature | Free online document | Not stated | 2 |
| Division of Professional Licensing Act (Utah Code, Title 58, Chapter 1), Parts 3 and 5 | Utah State Legislature | Free online document | Not stated | 1 |
| DLI Reference Manual for Residential Building Contractor and Remodeler License Exam | Minnesota Department of Labor and Industry | Free online document | Not stated | 3 |
| Electrical Black Book: USA Edition with Index Tabs | Black Book Publications | Book | Not stated | 2 |
| Electrical Field Reference Handbook: Revised for the NEC 2008 | Cengage Delmar Learning | Book | Not stated | 1 |
| Electricians Licensing Act Rule (Utah Administrative Code R156-55b) | Utah Division of Professional Licensing | Free online document | Not stated | 1 |
| Elliott-Larsen Civil Rights Act, Act 453 of 1976 | Michigan Legislature | Free online document | Not stated | 1 |
| Energy Efficient Building Construction in Florida | University of Florida (UF/IFAS) | Book | Not stated | 2 |
| Engineering Sign Structures: An Introduction to Analysis and Design | ST Media Group International Inc. | Book | Not stated | 1 |
| EPA Lead-Based Paint Pre-Renovation Education Rule (40 CFR Part 745, Subpart E, Residential Property Renovation) | U.S. Environmental Protection Agency | Free online document | Not stated | 1 |
| Erector’s Manual: Standards and Guidelines for the Erection of Precast Concrete Products | PCI (Precast/Prestressed Concrete Institute) | Book | Not stated | 8 |
| Evaporative Air Conditioning Handbook | Springer | Book | Not stated | 1 |
| Excavators’ Guide Including Damage to Underground Utility Facilities Act as Amended Through 2024 | Blue Stakes of Utah 811 | Free online document | Not stated | 1 |
| Facility Piping Systems Handbook: For Industrial, Commercial, and Healthcare Facilities | McGraw-Hill Professional | Book | Not stated | 1 |
| Ferm’s Fast Finder, NEC-2017 | International Association of Electrical Inspectors | Book | Not stated | 2 |
| Fibrous Glass Duct Construction Standards | Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA) | Book | Not stated | 3 |
| Fine Schedule (Okla. Admin. Code tit. 158, ch. 10) | Oklahoma Construction Industries Board | Free online document | Not stated | 2 |
| Finish Carpenter’s Manual | Craftsman Book Company | Book | Not stated | 9 |
| Fire Alarm Signaling Systems | National Fire Protection Association | Book | Not stated | 1 |
| Florida Administrative Code Chapter 64E-6: Standards for Onsite Sewage Treatment and Disposal Systems | Florida Department of Health | Free online document | Not stated | 1 |
| Florida Building Code, Accessibility, Eighth Edition (2023) | International Code Council | Code or standard | Not stated | 2 |
| Florida Building Code, Building, Eighth Edition (2023) | International Code Council | Code or standard | Not stated | 2 |
| Florida Building Code, Energy Conservation, Eighth Edition (2023) | International Code Council | Code or standard | Not stated | 2 |
| Florida Building Code, Fuel Gas, Eighth Edition (2023) | International Code Council | Code or standard | Not stated | 2 |
| Florida Building Code, Mechanical, Eighth Edition (2023) | International Code Council | Code or standard | Not stated | 2 |
| Florida Building Code, Residential, Eighth Edition (2023) | International Code Council | Code or standard | Not stated | 2 |
| Florida Statutes, Chapter 455: Business and Professional Regulation, General Provisions, 2019 | The Florida Legislature (Online Sunshine) | Free online document | Not stated | 2 |
| General Rule of the Division of Professional Licensing (Utah Administrative Code R156-1) | Utah Division of Professional Licensing | Free online document | Not stated | 1 |
| General Rule of the Division of Professional Licensing, R156-1 | Utah Division of Professional Licensing | Free online document | Not stated | 2 |
| Georgia Accessibility Code (Rules and Regulations of the State of Georgia, Chapter 120-3-20) | Not stated | Free online document | Not stated | 1 |
| Green Building Fundamentals: Practical Guide to Understanding and Applying Fundamental Sustainable Construction Practices and the LEED System, 2nd edition | Prentice Hall | Book | Not stated | 6 |
| Gypsum Construction Handbook, 7th Edition | Wiley | Book | Not stated | 24 |
| Hawaii Administrative Rules Title 12, Chapter 22: Wage Determinations and the Administration and Enforcement of Chapter 104, Hawaii Revised Statutes | Department of Labor and Industrial Relations (Hawaii) | Free online document | Not stated | 1 |
| Hawaii Administrative Rules, Title 12, Chapter 22: Wage Determinations and the Administration and Enforcement of Chapter 104, Hawaii Revised Statutes | Hawaii Department of Labor and Industrial Relations | Free online document | Not stated | 7 |
| Hawaii Revised Statutes Chapter 104: Wages and Hours of Employees on Public Works (free online) | Hawaii Department of Labor and Industrial Relations, Wage Standards Division | Free online document | Not stated | 1 |
| Hawaii Revised Statutes, Chapter 103: Expenditure of Public Money and Public Contracts | State of Hawaii (Hawaii State Legislature, capitol.hawaii.gov) | Free online document | Not stated | 7 |
| Hawaii Revised Statutes, Chapter 104: Wages and Hours of Employees on Public Works | State of Hawaii (Hawaii State Legislature, capitol.hawaii.gov) | Free online document | Not stated | 7 |
| High Pressure Boilers, 6th edition | American Technical Publishers, Incorporated | Book | Not stated | 3 |
| Home Improvement Examination Guide | New York City Department of Consumer and Worker Protection | Free online document | Not stated | 1 |
| Home Solicitation Sales Act (Act 227 of 1971) | Michigan Legislature | Free online document | Not stated | 1 |
| HVAC Basics for Contractors, 3rd Edition | Pearson | Book | Not stated | 2 |
| HVAC Duct Construction Standards: Metal and Flexible | SMACNA | Book | Not stated | 1 |
| HVAC Duct Construction Standards: Metal and Flexible, 4th Edition | SMACNA | Code or standard | Not stated | 16 |
| ICC A117.1-2009: Accessible and Usable Buildings and Facilities | International Code Council | Code or standard | Not stated | 2 |
| ICC A117.1-2017 Standard for Accessible and Usable Buildings and Facilities | ICC | Code or standard | Not stated | 11 |
| Idaho Plumbing Statutes and Rules | Idaho Division of Occupational and Professional Licenses | Free online document | Not stated | 1 |
| Idaho Public Works Contractor Licensing Statutes and Rules | Idaho Division of Occupational and Professional Licenses | Free online document | Not stated | 1 |
| Illinois Administrative Code | Not stated | Free online document | Not stated | 1 |
| Illinois Roofing Industry Licensing Act and Rules | Not stated | Free online document | Not stated | 1 |
| Individual License and Certification Regulations (18VAC50-30) | Virginia Board for Contractors | Free online document | Not stated | 2 |
| Individual License and Certification Regulations (18VAC50-30) | Virginia Board for Contractors | Free online document | Not stated | 1 |
| Individual License and Certification Regulations (18VAC50-30) | Virginia Board for Contractors | Free online document | Not stated | 1 |
| Industrial Accidents Laws and Rules (Utah Administrative Code, Title R612) | Utah Labor Commission | Free online document | Not stated | 1 |
| Industrial Accidents Rules (Utah Administrative Code, Title R612) | Utah Labor Commission | Free online document | Not stated | 1 |
| Industrial Refrigeration Handbook | McGraw-Hill | Book | Not stated | 1 |
| Instruction Manual for Training and Certification of Field Personnel for Unbonded Post-Tensioning (C30.1-03, Level 1 Unbonded PT Field Installation) | Post-Tensioning Institute | Book | Not stated | 11 |
| Insulation Handbook, 2000 | McGraw-Hill Professional | Book | Not stated | 4 |
| International Plumbing Code 2012, Includes International Private Sewage Disposal Code | International Code Council | Code or standard | Not stated | 1 |
| IPT’s Pipe Trades Handbook | IPT Publishing and Training Ltd. | Book | Not stated | 7 |
| Kentucky Administrative Regulations, 815 KAR Chapter 35 (Electrical Licensing) | Kentucky Legislative Research Commission | Free online document | Not stated | 1 |
| Kentucky Administrative Regulations, 815 KAR Chapter 8 (Heating, Ventilation and Air Conditioning) | Kentucky Legislative Research Commission | Free online document | Not stated | 1 |
| Kentucky Revised Statutes, Chapter 198B (Housing, Buildings, and Construction — Building Code) | Kentucky General Assembly | Free online document | Not stated | 1 |
| Kentucky Revised Statutes, Chapter 376 (Statutory Liens) | Kentucky General Assembly | Free online document | Not stated | 1 |
| Laws, Rules, Wiring and Conveyance Standards of North Dakota | North Dakota State Electrical Board | Free online document | Not stated | 1 |
| Laws, Rules, Wiring and Conveyance Standards of North Dakota, 2026 | North Dakota State Electrical Board | Free online document | Not stated | 1 |
| Lineman’s and Cableman’s Handbook, Fourteenth Edition | McGraw Hill | Book | Not stated | 3 |
| Liquid Waste Disposal and Treatment (20.7.3 NMAC) | New Mexico Environmental Improvement Board | Free online document | Not stated | 1 |
| Liquid Waste Disposal and Treatment (20.7.3 NMAC) | New Mexico Environmental Improvement Board | Free online document | Not stated | 1 |
| Live Sound Reinforcement, Bestseller Edition, Best Seller Edition | Thomson Course Technology | Book | Not stated | 7 |
| Louisiana Administrative Code, Title 51, Public Health-Sanitary Code, Part XIII: Sewage Disposal | Not stated | Free online document | Not stated | 1 |
| Low Pressure Boilers | American Technical Publishers | Book | Not stated | 6 |
| Low Voltage Wiring: Security/Fire Alarm Systems | McGraw Hill | Book | Not stated | 4 |
| Manual CS: Commercial Applications, Systems, and Equipment | Air Conditioning Contractors of America (ACCA) | Code or standard | Not stated | 1 |
| Manual D: Residential Duct Systems, 3rd edition | Air Conditioning Contractors of America | Code or standard | Not stated | 10 |
| Manual D: Residential Duct Systems, 3rd edition | Air Conditioning Contractors of America (ACCA) | Code or standard | Not stated | 1 |
| Manual D: Residential Duct Systems (ANSI/ACCA 1 Manual D – 2016), 3rd edition | Air Conditioning Contractors of America | Code or standard | Not stated | 1 |
| Manual J: Residential Load Calculation, 8th edition | Air Conditioning Contractors of America | Code or standard | Not stated | 9 |
| Manual J: Residential Load Calculation (8th Edition – Full) [ANSI/ACCA 2 Manual J-2016] | Air Conditioning Contractors of America (ACCA) | Code or standard | Not stated | 1 |
| Manual J: Residential Load Calculation (8th Edition – Full) [ANSI/ACCA 2 Manual J-2016] | Air Conditioning Contractors of America (ACCA) | Code or standard | Not stated | 1 |
| Manual J: Residential Load Calculation (8th Edition, Version 2) | ACCA | Book | Not stated | 6 |
| Manual J: Residential Load Calculation, 8th Edition – Full (ANSI/ACCA 2 Manual J – 2016) | Air Conditioning Contractors of America | Code or standard | Not stated | 1 |
| Manual N: Commercial Load Calculation, 5th edition | Air Conditioning Contractors of America (ACCA) | Book | Not stated | 7 |
| Manual N: Commercial Load Calculation, 5th edition | Air Conditioning Contractors of America (ACCA) | Book | Not stated | 2 |
| Manual N: Commercial Load Calculation | Air Conditioning Contractors of America (ACCA) | Code or standard | Not stated | 1 |
| Manual N: Commercial Load Calculation, 5th edition | Air Conditioning Contractors of America (ACCA) | Code or standard | Not stated | 1 |
| Manual of Construction with Steel Deck, 3rd edition | Steel Deck Institute | Book | Not stated | 7 |
| Manual of Construction with Steel Deck (MOC3) | Steel Deck Institute | Book | 0.5 lb | 2 |
| Manual of Construction with Steel Deck (MOC3), 3rd edition | Steel Deck Institute | Book | 0.5 lb | 1 |
| Manual Q: Low Pressure, Low Velocity Duct System Design | Air Conditioning Contractors of America (ACCA) | Code or standard | Not stated | 1 |
| Manual S: Residential Equipment Selection | Air Conditioning Contractors of America (ACCA) | Book | Not stated | 2 |
| Maryland Door-to-Door Sales Act | Maryland General Assembly | Free online document | Not stated | 1 |
| Massachusetts Architectural Access Regulations, 521 CMR 1.00-47.00 | Massachusetts Architectural Access Board | Free online document | Not stated | 1 |
| Massachusetts General Laws Chapter 141: Supervision of Electricians | The General Court of the Commonwealth of Massachusetts | Free online document | Not stated | 2 |
| Massachusetts General Laws Chapter 142: Supervision of Plumbing | The General Court of the Commonwealth of Massachusetts | Free online document | Not stated | 2 |
| Massachusetts General Laws Chapter 143, Sections 3L, 3P and 50 | The General Court of the Commonwealth of Massachusetts | Free online document | Not stated | 2 |
| Massachusetts General Laws Chapter 151: Minimum Fair Wages (selected sections) | The General Court of the Commonwealth of Massachusetts | Free online document | Not stated | 2 |
| Massachusetts General Laws Chapter 152: Workers’ Compensation (selected sections) | The General Court of the Commonwealth of Massachusetts | Free online document | Not stated | 2 |
| Massachusetts General Laws Chapter 254: Liens on Buildings and Land (selected sections) | The General Court of the Commonwealth of Massachusetts | Free online document | Not stated | 2 |
| Massachusetts Plumbing and Gas Code, 248 CMR (Sections 3.00-7.00 and 11.00, including the Massachusetts Fuel Gas Code), Sections dated 2010–2014 | Board of State Examiners of Plumbers and Gas Fitters | Free online document | Not stated | 1 |
| Massachusetts Plumbing and Gas Code, 248 CMR (Sections 3.00-7.00, 10.00 Uniform State Plumbing Code and 11.00), Sections dated 2005–2014 | Board of State Examiners of Plumbers and Gas Fitters | Free online document | Not stated | 1 |
| Mathematics for Plumbers and Pipefitters, 8th edition | Delmar Cengage Learning | Book | Not stated | 20 |
| Mechanical and Electrical Systems for Construction Managers | American Technical Publishers (ATP) | Book | Not stated | 6 |
| Mechanical Industry Regulations (Oklahoma Administrative Code, Title 158, Chapter 50) | Oklahoma Construction Industries Board | Free online document | Not stated | 1 |
| Mechanical Licensing Act (Oklahoma Statutes, Title 59, Chapter 43A, Sections 1850.1 et seq.) | State of Oklahoma (Oklahoma Statutes) | Free online document | Not stated | 1 |
| Michigan Electrical Code, Part 8 Rules | Michigan Department of Licensing and Regulatory Affairs, Bureau of Construction Codes | Free online document | Not stated | 2 |
| Milady Standard Barbering, 6th edition | Milady | Book | Not stated | 5 |
| Milady Standard Cosmetology | Milady (Cengage) | Book | Not stated | 7 |
| Minnesota Rules chapter 1350, Manufactured Homes | Office of the Revisor of Statutes | Free online document | Not stated | 1 |
| Minnesota Rules chapter 1360, Prefabricated Buildings | Office of the Revisor of Statutes | Free online document | Not stated | 1 |
| Minnesota Rules chapter 1361, Industrialized/Modular Buildings | Office of the Revisor of Statutes | Free online document | Not stated | 1 |
| Minnesota Rules chapter 4714, Plumbing Code | Office of the Revisor of Statutes | Free online document | Not stated | 1 |
| Minnesota Rules chapters 1300, 1303, 1309, 1315, 1322, 1350, 1360 and 2891 | Office of the Revisor of Statutes, Minnesota | Free online document | Not stated | 2 |
| Minnesota Rules chapters 1300, 1303, 1315, 1350 and 4714 | Office of the Revisor of Statutes | Free online document | Not stated | 1 |
| Minnesota Statutes chapter 326B, Construction Codes and Licensing | Office of the Revisor of Statutes | Free online document | Not stated | 1 |
| Minnesota Statutes chapter 327B, Manufactured Home Sales | Office of the Revisor of Statutes | Free online document | Not stated | 1 |
| Minnesota Statutes chapters 176, 181, 326B, 327A, 327B, 333 and 514 | Office of the Revisor of Statutes, Minnesota | Free online document | Not stated | 2 |
| Minnesota Statutes, Chapter 326B: Construction Codes and Licensing | Office of the Revisor of Statutes, State of Minnesota | Free online document | Not stated | 3 |
| Minnesota Statutes, sections 326B.081-326B.085, 326B.091-326B.099 and 326B.31-326B.399 | Office of the Revisor of Statutes | Free online document | Not stated | 1 |
| Modern Hydronic Heating and Cooling: For Residential and Light Commercial Buildings, 4th edition | Cengage Learning (Delmar) | Book | Not stated | 4 |
| Modern Masonry: Brick, Block, Stone, Concrete | Goodheart-Willcox | Book | Not stated | 34 |
| Modern Plumbing, 9th edition | Goodheart-Willcox | Book | Not stated | 5 |
| Modern Refrigeration and Air Conditioning, 22nd edition | Goodheart-Willcox | Book | Not stated | 29 |
| Modern Refrigeration and Air Conditioning | Goodheart-Willcox Publisher | Book | Not stated | 3 |
| Modern Welding | Goodheart-Willcox Publisher | Book | Not stated | 1 |
| Montana Statutes and Administrative Rules for the Board of Plumbers | Montana Department of Labor and Industry, Board of Plumbers | Free online document | Not stated | 1 |
| N.J.A.C. 5:23-7, Barrier Free Subcode | New Jersey Office of Administrative Law | Free online document | Not stated | 1 |
| NASCLA Contractors Guide to Business, Law and Project Management, Alabama General Contractors, 3rd edition | NASCLA | Book | Not stated | 5 |
| NASCLA Contractors Guide to Business, Law and Project Management, Alabama Residential Construction, 4th edition | NASCLA | Book | Not stated | 2 |
| NASCLA Contractors Guide to Business, Law and Project Management, Arkansas 8th Edition | NASCLA | Book | Not stated | 7 |
| NASCLA Contractors Guide to Business, Law and Project Management, Basic 14th Edition, Basic Edition | NASCLA | Book | Not stated | 33 |
| NASCLA Contractors Guide to Business, Law and Project Management, Connecticut 6th Edition | NASCLA | Book | Not stated | 5 |
| NASCLA Contractors Guide to Business, Law and Project Management, Florida Counties, 2nd edition | NASCLA | Book | Not stated | 1 |
| NASCLA Contractors Guide to Business, Law and Project Management, Georgia Construction Industry Licensing Board, 5th edition | NASCLA | Book | Not stated | 4 |
| NASCLA Contractors Guide to Business, Law and Project Management, Georgia State Licensing Board for Residential and General Contractors, 3rd Edition | NASCLA | Book | Not stated | 3 |
| NASCLA Contractors Guide to Business, Law and Project Management, Hawaii, 1st Edition | NASCLA (National Association of State Contractors Licensing Agencies) | Book | Not stated | 8 |
| NASCLA Contractors Guide to Business, Law and Project Management, Louisiana Master Plumbers & Master Natural Gas Fitters, 2nd edition | NASCLA | Book | Not stated | 2 |
| NASCLA Contractors Guide to Business, Law and Project Management, Maryland Home Improvement Commission, 7th edition | NASCLA | Book | Not stated | 1 |
| NASCLA Contractors Guide to Business, Law and Project Management, Maryland Home Improvement Salesperson (NASCLA Home Improvement Salesperson Reference Guide), 6th edition | NASCLA | Book | Not stated | 1 |
| NASCLA Contractors Guide to Business, Law and Project Management, Mississippi 6th Edition | NASCLA | Book | Not stated | 10 |
| NASCLA Contractors Guide to Business, Law and Project Management, New Jersey 2nd Edition, 1st edition | NASCLA | Book | Not stated | 5 |
| NASCLA Contractors Guide to Business, Law and Project Management, North Carolina Electrical, 14th Edition | NASCLA | Book | Not stated | 3 |
| NASCLA Contractors Guide to Business, Law and Project Management, North Carolina General, 10th edition | NASCLA | Book | Not stated | 2 |
| NASCLA Contractors Guide to Business, Law and Project Management, Ohio Construction Industry Licensing Board, 4th Edition | NASCLA | Book | Not stated | 4 |
| NASCLA Contractors Guide to Business, Law and Project Management, Oregon Construction Contractors, Oregon Construction Contractors edition | NASCLA | Book | Not stated | 1 |
| NASCLA Contractors Guide to Business, Law and Project Management, South Carolina Residential Builders, 9th Edition, 8th edition | NASCLA | Book | Not stated | 6 |
| NASCLA Contractors Guide to Business, Law and Project Management, Tennessee 4th Edition | NASCLA | Book | Not stated | 7 |
| NASCLA Contractors Guide to Business, Law and Project Management, Utah, 4th edition | NASCLA | Book | Not stated | 3 |
| National Electrical Safety Code (NESC) C2-2012 | Not stated | Code or standard | Not stated | 1 |
| National Electrical Safety Code (NESC), 2017 Edition | Institute of Electrical and Electronics Engineers (IEEE) | Code or standard | Not stated | 1 |
| National Electrical Safety Code (NESC), 2017 Edition (IEEE C2-2017) | IEEE | Code or standard | Not stated | 2 |
| Neon Techniques and Handling: Handbook of Neon Sign and Cold Cathode Lighting | ST Publications | Book | Not stated | 1 |
| New Hampshire Electricians’ Board Administrative Rules, Chapters Elec 100 to 400, with RSA Chapter 319-C, Electricians | New Hampshire Electricians’ Board | Free online document | Not stated | 1 |
| NFPA 101, Life Safety Code, 2024 | National Fire Protection Association (NFPA) | Code or standard | Not stated | 1 |
| NFPA 101, Life Safety Code Handbook, 2018 | National Fire Protection Association | Book | Not stated | 1 |
| NFPA 101, Life Safety Code, 2015 Edition | National Fire Protection Association | Code or standard | Not stated | 2 |
| NFPA 101: Life Safety Code, 2018 Edition | National Fire Protection Association | Code or standard | Not stated | 3 |
| NFPA 1031: Standard for Professional Qualifications for Fire Inspector and Plan Examiner, 2014 | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 13, Standard for the Installation of Sprinkler Systems, 2019 | National Fire Protection Association | Code or standard | Not stated | 11 |
| NFPA 13, Standard for the Installation of Sprinkler Systems, 2007 | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 13, Standard for the Installation of Sprinkler Systems, 2010 | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 13, Standard for the Installation of Sprinkler Systems, 2022 Edition | National Fire Protection Association | Code or standard | Not stated | 2 |
| NFPA 13D: Standard for the Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes, 2013 | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 13D: Standard for the Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes, 2007 | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 13R: Standard for the Installation of Sprinkler Systems in Low-Rise Residential Occupancies, 2013 | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 14, Standard for the Installation of Standpipe and Hose Systems, 2019 | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 17, Standard for Dry Chemical Extinguishing Systems, 2027 Edition | National Fire Protection Association | Code or standard | Not stated | 2 |
| NFPA 17A, Standard for Wet Chemical Extinguishing Systems | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 25, Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 30A, Code for Motor Fuel Dispensing Facilities and Repair Garages, 2015 | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 31, Standard for the Installation of Oil-Burning Equipment, 2011 | National Fire Protection Association | Code or standard | Not stated | 3 |
| NFPA 31, Standard for the Installation of Oil-Burning Equipment, 2020 | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 54, National Fuel Gas Code, 2015 Edition | National Fire Protection Association | Code or standard | Not stated | 2 |
| NFPA 54, National Fuel Gas Code, 2018 Edition | National Fire Protection Association | Code or standard | Not stated | 2 |
| NFPA 54/ANSI Z223.1, National Fuel Gas Code, 2012 | National Fire Protection Association | Code or standard | Not stated | 8 |
| NFPA 54: National Fuel Gas Code, 2021 | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 54: National Fuel Gas Code, 2024 | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 58, Liquefied Petroleum Gas Code, 2011 | National Fire Protection Association | Code or standard | Not stated | 3 |
| NFPA 58, Liquefied Petroleum Gas Code, 2020 Edition | National Fire Protection Association | Code or standard | Not stated | 2 |
| NFPA 58: Liquefied Petroleum Gas Code, 2014 | National Fire Protection Association | Code or standard | Not stated | 6 |
| NFPA 70, National Electrical Code, 2026 | National Fire Protection Association | Code or standard | Not stated | 10 |
| NFPA 70, National Electrical Code (NEC) Handbook | National Fire Protection Association (NFPA) | Book | Not stated | 1 |
| NFPA 70, National Electrical Code Handbook, 2023 | National Fire Protection Association | Book | Not stated | 2 |
| NFPA 70, National Electrical Code Handbook (2017 Edition) | National Fire Protection Association | Code or standard | Not stated | 2 |
| NFPA 70, National Electrical Code: 2023 Edition | National Fire Protection Association | Code or standard | Not stated | 44 |
| NFPA 70: National Electrical Code, 2011 | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 70: National Electrical Code, 2020 | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 70: National Electrical Code (NEC), 2017 Edition | National Fire Protection Association | Code or standard | Not stated | 16 |
| NFPA 70: National Electrical Code (NEC), 2020 Edition | National Fire Protection Association | Code or standard | Not stated | 32 |
| NFPA 70E, Standard for Electrical Safety in the Workplace, 2024 | National Fire Protection Association | Code or standard | Not stated | 3 |
| NFPA 72, National Fire Alarm and Signaling Code, 2013 | National Fire Protection Association | Code or standard | Not stated | 7 |
| NFPA 720: Standard for the Installation of Carbon Monoxide (CO) Detection and Warning Equipment, 2012 | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 72: National Fire Alarm and Signaling Code, 2016 | National Fire Protection Association | Code or standard | Not stated | 5 |
| NFPA 72: National Fire Alarm and Signaling Code, 2022 | National Fire Protection Association | Code or standard | Not stated | 5 |
| NFPA 72: National Fire Alarm and Signaling Code, 2010 (any edition accepted) | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 72: National Fire Alarm and Signaling Code, 2019 | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 72: National Fire Alarm and Signaling Code, 2019 Edition | National Fire Protection Association | Code or standard | Not stated | 17 |
| NFPA 730, Guide for Premises Security, 2023 | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 731, Standard for the Installation of Electronic Premises Security Systems, 2023 | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 90A, Standard for the Installation of Air-Conditioning and Ventilating Systems, 2024 Edition | National Fire Protection Association | Code or standard | Not stated | 2 |
| NFPA 90B, Standard for the Installation of Warm Air Heating and Air-Conditioning Systems, 2024 | National Fire Protection Association | Code or standard | Not stated | 1 |
| NFPA 96, Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations, 2024 | National Fire Protection Association | Code or standard | Not stated | 1 |
| North Carolina Administrative Code, Title 15A, Chapter 04: Sedimentation Control | North Carolina Sedimentation Control Commission | Free online document | Not stated | 2 |
| North Carolina General Statutes Chapter 87, Article 4: Electrical Contractors | North Carolina General Assembly | Free online document | Not stated | 1 |
| North Carolina General Statutes, Chapter 113A, Article 4: Sedimentation Pollution Control Act of 1973 | North Carolina General Assembly | Free online document | Not stated | 2 |
| North Carolina General Statutes, Chapter 87, Article 4: Electrical Contractors | North Carolina General Assembly | Free online document | Not stated | 2 |
| North Carolina State Building Code: Administrative Code and Policies 2018 | Not stated | Code or standard | Not stated | 5 |
| North Carolina State Building Code: Plumbing Code, 2018 | International Code Council | Code or standard | Not stated | 1 |
| North Carolina State Building Code: Plumbing Code — Plumbing Class I, 2018 | International Code Council | Code or standard | Not stated | 1 |
| Northern Comfort: Advanced Cold Climate Home Building Techniques | Alaska Craftsman Home Program, Incorporated | Book | Not stated | 2 |
| NRCA Repair Manual for Low-Slope Membrane Roof Systems | National Roofing Contractors Association (NRCA) | Book | Not stated | 1 |
| NTC Blue Book: Low Voltage Systems | National Training Center | Book | Not stated | 8 |
| NTC Yellow Book: Video Security Systems | National Training Center | Book | Not stated | 3 |
| Occupational Code, Act 299 of 1980 (Articles 1-6 and 24) | Michigan Legislature | Free online document | Not stated | 1 |
| Occupational License for Former Offenders, Act 381 of 1974 | Michigan Legislature | Free online document | Not stated | 1 |
| Occupational Licensing Centralized Regulations (12 AAC 02), Alaska | Alaska Department of Commerce, Community, and Economic Development, Division of Corporations, Business and Professional Licensing | Free online document | Not stated | 4 |
| Oklahoma Administrative Code Title 158, Chapter 10: Fine Schedule | Oklahoma Construction Industries Board | Free online document | Not stated | 1 |
| Oklahoma Administrative Code Title 158, Chapter 10: Fine Schedule | Oklahoma Construction Industries Board | Free online document | Not stated | 1 |
| Oklahoma Administrative Code Title 158, Chapter 40: Electrical Industry Regulations | Oklahoma Construction Industries Board | Free online document | Not stated | 1 |
| Oklahoma Electrical License Act (Title 59, Sections 1680 to 1697) | Oklahoma Construction Industries Board | Free online document | Not stated | 1 |
| Oklahoma Statutes, Title 42 (Liens), Chapter 3: Mechanics and Materialmen’s Liens | Oklahoma Supreme Court (Oklahoma State Courts Network) | Free online document | Not stated | 4 |
| Onsite Wastewater Systems (Utah Administrative Code R317-4) | Utah Department of Environmental Quality | Free online document | Not stated | 1 |
| Oregon Administrative Rules, Chapter 918 (Building Codes Division) | Oregon Department of Consumer and Business Services, Building Codes Division | Free online document | Not stated | 2 |
| Oregon Plumbing Specialty Code (OPSC), 2021 | Oregon Building Codes Division | Code or standard | Not stated | 1 |
| Oregon Revised Statutes, Chapter 479: Protection of Buildings From Fire; Electrical Safety Law | Not stated | Free online document | Not stated | 2 |
| Paint Contractor’s Manual | Craftsman Book Company | Book | Not stated | 1 |
| Payment of Wages and Fringe Benefits Act (Act 390 of 1978) | Michigan Legislature | Free online document | Not stated | 1 |
| PCA Craftsman Manual & Textbook, 8th edition | Painting Contractors Association | Book | Not stated | 4 |
| Photovoltaic Systems | American Technical Publishers | Book | Not stated | 3 |
| Pipe & Excavation Contracting Revised, Revised edition | Craftsman Book Company | Book | Not stated | 21 |
| Pipe Welding Procedures | Industrial Press, Inc. | Book | Not stated | 1 |
| Pipefitters Handbook | Industrial Press | Book | Not stated | 9 |
| Placing Reinforcing Bars | Concrete Reinforcing Steel Institute | Book | Not stated | 11 |
| Plumber’s Handbook, Revised edition | Craftsman Book Company | Book | Not stated | 1 |
| Plumbing Industry Regulations (Oklahoma Administrative Code, Title 158, Chapter 30) | Oklahoma Construction Industries Board | Free online document | Not stated | 1 |
| Plumbing Law | Arkansas Department of Health | Free online document | Not stated | 1 |
| Plumbing Technology: Design and Installation | Cengage Learning | Book | Not stated | 1 |
| Plumbing: Design and Installation | American Technical Publishers | Book | Not stated | 2 |
| POWTS Component Manuals (At-Grade, Holding Tank, Single Pass Sand Filter, In-Ground Soil Absorption, Mound, Pressure Distribution) | Wisconsin Department of Safety and Professional Services | Free online document | Not stated | 1 |
| Principles and Practices of Commercial Construction, 11th edition | Pearson | Book | Not stated | 6 |
| Principles and Practices of Commercial Construction | Pearson Education, Limited | Book | Not stated | 2 |
| Printreading Based on the 2020 NEC | American Technical Publishers | Book | Not stated | 2 |
| Publication 15 (Circular E), Employer’s Tax Guide | Internal Revenue Service | Free online document | Not stated | 2 |
| Publication 15 (Circular E), Employer’s Tax Guide | Internal Revenue Service | Free online document | Not stated | 1 |
| Publication 15 (Circular E), Employer’s Tax Guide (Rev. January 2007) | Internal Revenue Service | Free online document | Not stated | 1 |
| Recording and Reporting Occupational Injuries and Illnesses (29 CFR Part 1904) | Occupational Safety and Health Administration, U.S. Department of Labor | Free online document | Not stated | 1 |
| Refrigeration & Air Conditioning Technology | Cengage | Book | Not stated | 9 |
| Regulations of Connecticut State Agencies, Section 29-262-2b: Building official duties, minimum qualifications and continuing education requirement | State of Connecticut (eRegulations System) | Free online document | Not stated | 1 |
| Repair and Restoration Trainee Guide (module 28303-14) | Pearson Education, Limited | Book | Not stated | 1 |
| Repointing Mortar Joints in Historic Masonry Buildings (Preservation Brief 2) | National Park Service | Free online document | Not stated | 1 |
| Residential Builders Law 2022, with Rules and Regulations of the State Board of Contractors as Applied to Residential Builders and Remodelers | Mississippi State Board of Contractors | Free online document | Not stated | 1 |
| Residential Builders Law and Rules (Mississippi State Board of Contractors, Revised 2022) | Mississippi State Board of Contractors | Free online document | Not stated | 1 |
| Residential Load Calculation Manual J, Abridged Edition, 8th edition, abridged | Air Conditioning Contractors of America | Code or standard | Not stated | 1 |
| Residential Oil Burners, 3rd Edition | Cengage | Book | Not stated | 4 |
| Rhode Island Plumbing Code (RISBC-3, 510-RICR-00-00-3), 2019 | Rhode Island Building Code Standards Committee | Free online document | Not stated | 1 |
| Roofing Construction & Estimating Revised, Revised edition | Craftsman Book Company | Book | Not stated | 30 |
| Roofing Contractor Registration Act (Oklahoma Statutes, Title 59, Chapter 30, Sections 1151.1 et seq.) | State of Oklahoma (Oklahoma Statutes) | Free online document | Not stated | 1 |
| Roofing Contractor Registration Regulations (Oklahoma Administrative Code, Title 158, Chapter 85) | Oklahoma Construction Industries Board | Free online document | Not stated | 1 |
| Saf-Mec 100 Organizational Rules, Part Saf-Mec 101 Purpose and Scope of Administrative Rules of the Board | New Hampshire Department of Safety | Free online document | Not stated | 1 |
| Safety and Health Regulations for Construction (29 CFR Part 1926) | Not stated | Free online document | Not stated | 15 |
| Safety and Health Regulations for Construction (29 CFR Part 1926) | Occupational Safety and Health Administration, U.S. Department of Labor | Free online document | Not stated | 4 |
| Safety and Health Regulations for Construction (29 CFR Part 1926) | Occupational Safety and Health Administration, U.S. Department of Labor | Free online document | Not stated | 1 |
| Safety and Health Regulations for Construction (29 CFR Part 1926) | Occupational Safety and Health Administration, U.S. Department of Labor | Free online document | Not stated | 1 |
| Safety and Health Regulations for Construction (29 CFR Part 1926) | Occupational Safety and Health Administration, U.S. Department of Labor | Free online document | Not stated | 1 |
| Salon Fundamentals Cosmetology Textbook | Pivot Point | Book | Not stated | 2 |
| Security: A Guide to Security System Design and Equipment Selection and Installation, 2nd edition | Butterworth-Heinemann | Book | Not stated | 1 |
| Skilled Trades Regulation Act (Act 407 of 2016) | Michigan Legislature | Free online document | Not stated | 3 |
| Skilled Trades Regulation Act (Act 407 of 2016) | Michigan Legislature | Free online document | Not stated | 1 |
| Skilled Trades Regulation Act, 2016 PA 407 | Michigan Legislature | Free online document | Not stated | 1 |
| Skilled Trades Regulation Act, 2016 PA 407 | Michigan Legislature | Free online document | Not stated | 1 |
| Solar Photovoltaic Systems Installer Trainee Guide | Prentice Hall | Book | Not stated | 1 |
| South Carolina 811 Excavator Manual | Palmetto Utility Protection Service, Inc. (SC811) | Free online document | Not stated | 2 |
| South Carolina 811 Excavator Manual, 2023 | Palmetto Utility Protection Service, Inc. (SC811) | Free online document | Not stated | 2 |
| South Carolina Building Code Modifications, 2018 | South Carolina Department of Labor, Licensing and Regulation, Building Codes Council | Free online document | Not stated | 1 |
| South Carolina Building Code Modifications | South Carolina Department of Labor, Licensing and Regulation, Building Codes Council | Free online document | Not stated | 1 |
| South Carolina Code of Laws, Title 40, Chapter 79: Burglar and Fire Alarm Contractor’s License Law | South Carolina Legislature | Free online document | Not stated | 1 |
| South Carolina Mechanical Code Modifications | South Carolina Department of Labor, Licensing and Regulation, Building Codes Council | Free online document | Not stated | 1 |
| Sports Fields: Design, Construction, and Maintenance, 4th edition | Wiley | Book | Not stated | 1 |
| State Plumbing Code (Iowa Administrative Code, 481-Chapter 425), 2024 | Iowa Plumbing and Mechanical Systems Board | Free online document | Not stated | 1 |
| Statewide Amendments to International Fuel Gas Code (Utah Code, Title 15A, Chapter 3, Part 5), 2015 | Utah State Legislature | Free online document | Not stated | 1 |
| Statewide Amendments to International Mechanical Code (Utah Code, Title 15A, Chapter 3, Part 4), 2015 | Utah State Legislature | Free online document | Not stated | 1 |
| Statewide Amendments to International Plumbing Code (Utah Code, Title 15A, Chapter 3, Part 3) | Utah State Legislature | Free online document | Not stated | 1 |
| Statutes and Regulations: Construction Contractors (AS 08.18 and 12 AAC 21), Alaska | Alaska Department of Commerce, Community, and Economic Development, Division of Corporations, Business and Professional Licensing | Free online document | Not stated | 4 |
| Statutes and Regulations: Electrical Administrators (AS 08.40.005 – 08.40.200 and 12 AAC 32) | Department of Commerce, Community, and Economic Development, Division of Corporations, Business and Professional Licensing | Free online document | Not stated | 1 |
| Statutes and Regulations: Mechanical Administrators (AS 08.40.210-08.40.490 and 12 AAC 39) | Alaska Department of Commerce, Community, and Economic Development, Division of Corporations, Business and Professional Licensing | Free online document | Not stated | 2 |
| Steam Plant Operation | McGraw-Hill Education | Book | Not stated | 1 |
| Stille-DeRossett-Hale Single State Construction Code Act (Act 230 of 1972) | Michigan Legislature | Free online document | Not stated | 5 |
| Stille-DeRossett-Hale Single State Construction Code Act (Act 230 of 1972) | Michigan Legislature | Free online document | Not stated | 1 |
| Table of amendments to the 2026 NEC (2026 Oregon Electrical Specialty Code) | Oregon Building Codes Division | Free online document | Not stated | 2 |
| Technical Digest 9: Handling and Erection of Steel Joists and Joist Girders | Steel Joist Institute | Book | 1.0625 lb | 10 |
| Technical Digest 9: Handling and Erection of Steel Joists and Joist Girders | Steel Joist Institute | Book | 1.0625 lb | 5 |
| Technical Digest 9: Handling and Erection of Steel Joists and Joist Girders | Steel Joist Institute | Book | 1.0625 lb | 1 |
| Telecommunications Wiring, 3rd edition | Prentice Hall PTR | Book | Not stated | 10 |
| Texas Administrative Code, Title 16, Chapter 75: Air Conditioning and Refrigeration Contractors Administrative Rules | Texas Department of Licensing and Regulation | Free online document | Not stated | 1 |
| Texas Insurance Code, Chapter 6002: Fire Detection and Alarm Device Installation | Not stated | Free online document | Not stated | 1 |
| Texas Occupations Code, Chapter 1302: Air Conditioning and Refrigeration Contractors | Texas Department of Licensing and Regulation | Free online document | Not stated | 1 |
| The ADA: Your Responsibilities as an Employer | U.S. Equal Employment Opportunity Commission | Free online document | Not stated | 2 |
| The Complete Illustrated Guide to Furniture & Cabinet Construction | Taunton Press | Book | Not stated | 6 |
| The Contractor’s Guide to Quality Concrete Construction, 4th Edition (MNL-5(19)) | American Concrete Institute and American Society of Concrete Contractors | Book | Not stated | 1 |
| The Contractor’s Guide to Quality Concrete Construction, 4th Edition (MNL-5(19)) | American Concrete Institute and American Society of Concrete Contractors | Book | Not stated | 1 |
| The Easy Guide to Solar Electric Part II, Installation Manual | ADI Solar | Book | Not stated | 1 |
| The Employer’s Guide to Unemployment Insurance | Massachusetts Department of Unemployment Assistance | Free online document | Not stated | 2 |
| The ILI Handbook (Indiana Limestone Handbook) | Indiana Limestone Institute of America | Free online document | Not stated | 1 |
| The NRCA Roofing Manual: Architectural Metal Flashing and Condensation and Air Leakage Control | NRCA | Book | Not stated | 5 |
| The NRCA Roofing Manual: Membrane Roof Systems | National Roofing Contractors Association | Book | Not stated | 11 |
| The NRCA Roofing Manual: Membrane Roof Systems | National Roofing Contractors Association | Book | Not stated | 3 |
| The NRCA Roofing Manual: Metal Panel and SPF Roof Systems | National Roofing Contractors Association | Book | Not stated | 7 |
| The NRCA Roofing Manual: Steep-slope Roof Systems | National Roofing Contractors Association | Book | Not stated | 14 |
| The NRCA Safety Manual, Third Edition, 3rd edition | National Roofing Contractors Association | Book | Not stated | 1 |
| The Pipe Fitter’s and Pipe Welder’s Handbook | Glencoe Publishing Co. | Book | Not stated | 1 |
| The Plumbing License Law of 1955 (Oklahoma Statutes, Title 59, Chapter 27, Sections 1001 et seq.) | State of Oklahoma (Oklahoma Statutes) | Free online document | Not stated | 1 |
| Title 14 NMAC, Housing and Construction (Chapter 7, Building Codes General) | Construction Industries Division of the New Mexico Regulation and Licensing Department | Free online document | Not stated | 1 |
| Title 21, North Carolina Administrative Code, Chapter 18B: Board’s Rules for the Implementation of the Electrical Contracting Licensing Act | North Carolina Board of Examiners of Electrical Contractors | Free online document | Not stated | 2 |
| Ugly’s Electrical References, 2026 | Jones & Bartlett Learning | Book | Not stated | 4 |
| Ugly’s Electrical References, 2020 Edition | Jones & Bartlett Learning | Book | Not stated | 6 |
| Ugly’s Electrical References, 2023 Edition | Jones & Bartlett Learning | Book | Not stated | 33 |
| Ugly’s Residential Wiring, 2020 Edition | Jones & Bartlett Learning | Book | Not stated | 1 |
| UL 681, Installation and Classification of Burglar and Holdup Alarm Systems | UL Standards & Engagement | Code or standard | Not stated | 3 |
| Understanding and Servicing Alarm Systems, 3rd edition | Butterworth-Heinemann | Book | Not stated | 9 |
| Uniform Boiler and Pressure Vessel Act (North Carolina General Statutes, Chapter 95, Article 7A) | North Carolina General Assembly | Free online document | Not stated | 1 |
| Uniform Commercial Code (Michigan Compiled Laws, Act 174 of 1962) | Michigan Legislature | Free online document | Not stated | 1 |
| Uniform Dwelling Code (Chapters SPS 320-325), Appendix A, Appendix B and Appendix C | Wisconsin Legislature (rules of the Department of Safety and Professional Services) | Free online document | Not stated | 1 |
| Uniform Mechanical Code, 2018 | International Association of Plumbing and Mechanical Officials (IAPMO) | Code or standard | Not stated | 3 |
| Uniform Plumbing Code, 2015 | International Association of Plumbing and Mechanical Officials (IAPMO) | Code or standard | Not stated | 3 |
| Uniform Plumbing Code, 2018 edition (adopted as the 2018 North Dakota Plumbing Code) | International Association of Plumbing and Mechanical Officials (IAPMO) | Code or standard | Not stated | 1 |
| Utah Antidiscrimination Act, Title 34A, Chapter 5 | Not stated | Free online document | Not stated | 2 |
| Utah Code Section 15-10-201: Notice requirement (Title 15, Contracts and Obligations in General; Chapter 10, Service Contracts Act) | Utah State Legislature | Free online document | Not stated | 1 |
| Utah Code Section 15A-3-601 (State Construction and Fire Codes Act, Part 6: Statewide Amendments to National Electrical Code) | Utah State Legislature | Free online document | Not stated | 1 |
| Utah Code Title 58, Chapter 1: Division of Professional Licensing Act | Utah State Legislature | Free online document | Not stated | 1 |
| Utah Construction Trades Licensing Act (Utah Code, Title 58, Chapter 55) | Utah State Legislature | Free online document | Not stated | 1 |
| Utah Construction Trades Licensing Act, Title 58, Chapter 55 | Not stated | Free online document | Not stated | 2 |
| Utah Occupational Safety and Health Act, Title 34A, Chapter 6 | Not stated | Free online document | Not stated | 2 |
| Vermont Statutes, Title 26, Chapter 15: Electricians and Electrical Installations | Vermont General Assembly | Free online document | Not stated | 1 |
| Virginia Construction Code, Part I of the Virginia Uniform Statewide Building Code (13VAC5-63), Chapter 1: Administration, 2018 | Virginia Department of Housing and Community Development | Free online document | Not stated | 1 |
| Virginia Uniform Statewide Building Code (13VAC5-63), 2018 | Virginia Department of Housing and Community Development | Free online document | Not stated | 1 |
| Virginia Uniform Statewide Building Code (13VAC5-63), Part I Construction, Chapter 1 Administration, 2021 | Virginia Department of Housing and Community Development | Free online document | Not stated | 5 |
| Virginia Uniform Statewide Building Code (13VAC5-63), Part I Virginia Construction Code, Chapter 1: Administration, 2015 | Virginia Department of Housing and Community Development | Free online document | Not stated | 1 |
| Virginia Uniform Statewide Building Code (13VAC5-63), Part I Virginia Construction Code, Chapter 1: Administration, 2018 | Virginia Department of Housing and Community Development | Free online document | Not stated | 1 |
| Virginia Uniform Statewide Building Code, Part I, Virginia Construction Code, Chapter 1 Administration (13VAC5-63-10), 2021 | Virginia Department of Housing and Community Development | Free online document | Not stated | 4 |
| Walker’s Building Estimator’s Reference Book, 33rd Edition | Frank R Walker.com | Book | Not stated | 2 |
| Walker’s Insulation Techniques and Estimating Handbook | Frank R. Walker Company | Book | Not stated | 1 |
| Water Processing: Residential, Commercial, Light-Industrial (Third Edition) | Water Quality Association | Book | Not stated | 1 |
| Welding: Principles and Applications | Cengage Learning | Book | Not stated | 1 |
| West Virginia Contractor Licensing Act (West Virginia Code, Chapter 30, Article 42) | West Virginia Legislature (West Virginia Code) | Free online document | Not stated | 8 |
| Wisconsin Administrative Code, Chapter SPS 302 (Fee Schedule) and Chapters SPS 381-387 (Plumbing) | Wisconsin Department of Safety and Professional Services | Free online document | Not stated | 1 |
| Wisconsin Administrative Code, Chapter SPS 305: Licenses, Certifications and Registrations | Wisconsin Department of Safety and Professional Services | Free online document | Not stated | 2 |
| Wisconsin Administrative Code, Chapter SPS 305: Licenses, Certifications and Registrations | Wisconsin Department of Safety and Professional Services | Free online document | Not stated | 2 |
| Wisconsin Administrative Code, Chapter SPS 316 (Electrical) | Wisconsin Department of Safety and Professional Services | Free online document | Not stated | 1 |
| Wisconsin Administrative Code, Chapter SPS 341 (Boilers and Pressure Vessels) | Wisconsin Department of Safety and Professional Services | Free online document | Not stated | 1 |
| Wisconsin Administrative Code, Chapter SPS 345 (Mechanical Refrigeration) | Wisconsin Department of Safety and Professional Services | Free online document | Not stated | 1 |
| Wisconsin Administrative Code, Chapters SPS 316 (Electrical), SPS 320 (Administration and Enforcement, Uniform Dwelling Code) and SPS 324 (Electrical Standards) | Wisconsin Department of Safety and Professional Services | Free online document | Not stated | 1 |
| Wisconsin Administrative Code, Chapters SPS 320-322 (Uniform Dwelling Code) | Wisconsin Department of Safety and Professional Services | Free online document | Not stated | 1 |
| Wisconsin Administrative Code, Chapters SPS 320-323 (Uniform Dwelling Code) | Wisconsin Department of Safety and Professional Services | Free online document | Not stated | 1 |
| Wisconsin Administrative Code, Chapters SPS 320-325 (Uniform Dwelling Code) | Wisconsin Department of Safety and Professional Services | Free online document | Not stated | 1 |
| Wisconsin Administrative Code, Chapters SPS 325 (Plumbing, Uniform Dwelling Code), SPS 381 (Definitions and Standards), SPS 382 (Plumbing Design, Construction and Inspection) and SPS 384 (Plumbing Products) | Wisconsin Department of Safety and Professional Services | Free online document | Not stated | 1 |
| Wisconsin Administrative Code, Chapters SPS 361-366 (Commercial Building Code) | Wisconsin Department of Safety and Professional Services | Free online document | Not stated | 1 |
| Wisconsin Administrative Code, Chapters SPS 361-366 (Commercial Building Code) | Wisconsin Department of Safety and Professional Services | Free online document | Not stated | 1 |
| Wisconsin Administrative Code, Chapters SPS 361-366 (Commercial Building Code, which adopts the International Codes with Wisconsin amendments) | Wisconsin Department of Safety and Professional Services | Free online document | Not stated | 1 |
| Wisconsin Administrative Code, Chapters SPS 382-387 (Plumbing) | Wisconsin Department of Safety and Professional Services | Free online document | Not stated | 1 |
| Wisconsin Statutes, Chapter 145: Plumbing and Fire Protection Systems and Swimming Pool Plan Review | Wisconsin State Legislature | Free online document | Not stated | 1 |
| Wood Design Package (2018 edition): National Design Specification (NDS) for Wood Construction with Commentary and Supplement: Design Values for Wood Construction | American Wood Council | Book | Not stated | 1 |
| Worker’s Disability Compensation Act of 1969 (Act 317 of 1969, MCL Chapter 418) | Michigan Legislature | Free online document | Not stated | 1 |
| Workers’ Compensation Act, Title 34A, Chapter 2 | Not stated | Free online document | Not stated | 2 |
| Workforce Opportunity Wage Act (Act 138 of 2014) | Michigan Legislature | Free online document | Not stated | 1 |
