At the Century of Progress, 1933, Chicago. Don't know about this one. UP had a couple of 4-4-0s, the 943 and 945, that got pulled around for various displays, but they were somewhat newer than this one. Any idea what this one was?

http://content.cdlib.org/view?docId=kt6 ... &brand=oac

Another, better view:

http://138.23.124.164/images/kmast2/geo ... u98601.jpg

Dewitt Clinton replica there:

http://138.23.124.164/images/kmast2/geo ... u71119.jpg