On Aug 26, 2009, at 3:30 PM, Tim O'Connor wrote:

The Ebay seller says this is a Rock Island box car. Anyone
recognize it?

http://i28.photobucket.com/albums/c248/myoungwisc/May%20Slides/
riBracedBoxcar_unk_unk_stamped.jpg

The design is USRA 50 ton single sheathed. Definitely not Rock
Island, which owned no such box cars. And definitely not built for
the USRA, as the ends are 7/8 corrugated, not 5/5/5. I'm not aware
of any US railroads that had such cars, but the Canadian Pacific had
a lot of them built in the early 1920s.

Richard Hendrickson