Fascinating history of Union Pacific's Challenger steam locomotive No. 3985, the largest operating steam locomotive in the US. Packed with black and white photos showing its 1981 renovation and continued use as a UP representative in the early 1980s. With schematic diagram. 64 pages.

Union Pacific 3985

Science & Math

William E. Botkin

Ronald G. Hill

R. H. Kindig

Technology

Collage

<p>Nicely done black and white pictorial of the Union Pacific's main line circa 1986 showing the system in action. With maps of the Eastern, South Central, and Northwestern Districts. 79 pages.</p>

Union Pacific: Mainline West

Victor Hand

Colorado Railroad Museum

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Books by William E. Botkin