Union Pacific 4006 4-8-8-4 "Big Boy"         
Union Pacific 4006 4-8-8-4 "Big Boy" at the National Museum of Transportation in St Louis, MO. Often called the "largest" steam locomotive ever made. It was the longest, but Yellowstones were heavier and at least four other articulateds had higher tractive effort.
Date: 7/18/1983 Location: Saint Louis, MO   Map Show Saint Louis on a rail map Views: 441 Collection Of:   Charles Kinzer
Locomotives: UP 4006(4-8-8-4)    Author:  Charles Kinzer
Union Pacific 4006 4-8-8-4 "Big Boy"
Picture Categories: Roster,Steam This picture is part of album:  National Museum of Transportation, St. Louis, 1983
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