Recreational Vehicle: Travel Trailers, Camping Trailers, Truck Campers, Motorhomes: Installation of Plumbling, heating, and Electrical Systems
1971
https://discoverarchives.library.ualberta.ca/recreational-vehicle-travel-trailers-camping-trailers-truck-campers-motorhomes-installation-of-plumbling-heating-and-electrical-systems
0ANSI A119.2 (also NFPA 501C)