A photograph postcard showing Union Pacific (UP) 993, 983 and 987, diesel-electrics, on westbound passenger train No. 101, "City of San Francisco", with steam loco 2867 pushing, near Sherman, WY, 14 cars, 45 mph.

A photograph postcard showing Union Pacific (UP) 994 and 703 diesel-electrics, on westbound passenger train No. 103, "City of Los Angeles", with steam loco 2863 pushing, west of Cheyenne, WY, 12 cars, 40 mph.

A photograph postcard showing Union Pacific (UP) 5317, 2-10-2, and 4015, 4-8-8-4, on westbound mixed freight extra, leaving Cheyenne, WY, 75 cars, 20 mph. (I [had] asked the fireman on 5317 for a good smoke whenever he saw me photographing his train!)

A photograph postcard showing Union Pacific (UP) 5088, 2-10-2, and 4019, 4-8-8-4, west of Cheyenne, WY, on freight extra, 78 cars, 25 mph. (Note M.W. Swansick taking movies.)

A photograph postcard showing Union Pacific (UP) 4016, 4-8-8-4, on mixed freight extra at Borie, WY, 78 cars, 20 mph.

Report issued by the Bureau of Mines over studies conducted on the pilot plant in Laramie County, Wyoming. As stated in the introduction, "the purpose of this report is to record information derived from recent experimental work that had as its objective the development and demonstration of one method of producing sponge iron" (p. 2). This report includes tables, illustrations, and photographs.