Thor,
I don't know of a better resource than Mr. Bernie Watts with Backshop Enterprises.
He appears to be the American guru of Westinghouse steam air compressors. He has done work for lots of tourist lines including the one I am associated with. Knowing him, I believe he would willingly help you with a distance learning project such as you mentioned.
Backshop Enterprises
Bernie Watts
5160-B Parfet St, Unit 1
Wheat Ridge, CO, USA 80033
phone (303) 424-6882
(No web site that I could find).
Good luck and shoot us some photos from time to time. I have seen some photos of the collection that I believe you are working with and there are some real interesting pieces in group.