This just in from Jennie Hendrickson who is currently transcribing an interview of Roger Broggie conducted by Dave Smith for a futrure volume of Walt's People:

[I checked the spelling of the McDermott Collection (spelled differently) in Los Gatos, CA, that Broggie mentioned. This was a collection of trains owned by Casey Jones that Walt Disney went to see with Broggie and considered buying. When I looked this up on the internet, this book and these photos showed up, (from the Jones Collection).]