FYI, I just bought a new book that appeared in the recent Ron's Books listings: American Steam Locomotives, Design and Development, 1880-1960....
Thanks to the late Lloyd Stagner who provided me with this data. I imagine he obtained it from material at the defunct Frisco Museum.
Here's a real dandy that I've been meaning to scan for some time. Someone in or around Chaffee gave it to my father to give to me.
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