I don't really get into railroadiana because I collect too much other stuff (and have to
slap my hand to keep from collecting more), so all I have are a few railroad spikes
picked up along Otto Mears' narrow gauge roadbeds, and a large bolt that my nephew
got from the ruins of the famous covered turntable on the Silverton RR some years ago.
(there is one other item for an eastern road that I bought cheap at an estate auction, but at the moment I can't think what it is, or what RR it is for)