Ted,
Does "across the country" include Alaska-Canada as well?
If you're expecting museum folks to post here, don't hold your breath in anticipation. Most of the 'toorist museems' up here are mostly concerned with tourist traffic not preservation of historic equipment. They will paint whatever numbers on the cars as suits their fancy, regardless of which car it actually is. Perhaps you should set up a webpage with an interactive input data form so that someone knows what information you want.
Mike
Whitehorse YT