I didn't realize part of this former UP line was still left in Wyoming. Apparently the last portion is due for dismantling. It ran Laramie, Wyoming to Coalmont, Colorado, and in its last incarnation was known as the Wyoming-Colorado RR, with passenger service pulle by ex-Alaska FP7s. After the total UP tkeover in the 1950s, they ran a few excursions pulled by UP 535, now on display at Laramie. When it was still a subsidiary, they ran 48-inch drivered stock model BLW 2-8-2s, like McCloud River 18.

STB document:

http://www.trainorders.com/discussion/r ... ,nodelay=1

535 in 1956:

http://photoswest.org/cgi-bin/imager?00017458+OP-17458

One of the Baldwins:

http://photoswest.org/cgi-bin/imager?00012449+OP-12449