Thank you for posting your extensive list of sources of catalogs and information on most model train manufactures products over the years. I now know where to go to fill the holes in my stacks of old catalogs.
It would be great if someone would complete the train guides that Greenberg and Doyle did so well for Lionel and Marx for prewar and postwar trains. For recent times it should include Lionel after 1991 and 2000, MTH, Williams, K-Line and others. I would be happy with someone just scanning information from catalogs into an on line book for each manufacturer. It could include just one scan for each item not a scan of the whole catalogs.