What a job!
You have a huge job ahead of you. In the 70's, I drove truck for Oscar Cooke, who was setting up his museum, Oscar's Dreamland, outside Billings, Montana. The main focus of the museum was antique farm machinery, cars and trucks, etc. He also had an M4 high speed tractor in there which I would love to have. As the years went by, he assembled a narrow gauge railroad on the property, with a steam and a diesel locomotive. The old man was rich, and could do anything he wanted. He went around Montana buying old buildings like barbershops, a depot, and many others, and had them moved to the museum. It was truly awesome. I don't know what happened to the railroad equipment after he died in the early '90s. Krause auctioneers had to have two auctions to sell all the stuff. Maybe they have records of where some of the stuff went. Pagan