Walt--
I think that you should contact the National Railway Historical Society
and let them know about these plans and drawings. I am sure that they would
most likely be interested in them. You may even have a local chapter in your
area.
It would surely be a shame if they wound up
Fairly close to home (for me) I suggest you contact the Tennessee Valley
Railway Museum or the NMRA Kalmbach Library, both of which are in
Chattanooga, Tennessee. Other choices might be the railroad museum in
Sacramento, California or one or more of the universities which are
preserving similar