Index For This Page
This page was last updated on October 9, 2022.
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UP Steam Locomotive Diagrams -- Two photo albums of Union Pacific steam locomotive diagrams. One for 1925, and another for 1936. The later book for 1936 includes the FEF-1 4-8-4s and the earliest Challengers. Both books are presented through the courtesy of Richard Flebbe, whose father was UP's Research and Mechanical Engineer at the time of his retirement in 1974 after 44 years of service.
Union Pacific Steam Tests -- PDF documents (total of 22) covering various tests by Union Pacific on some of its steam locomotives in 1940 and 1947-1949. These test reports and other items come from Richard Flebbe, whose father was Paul Flebbe, UP's Engineer of Road Tests during this period. Included are tests comparing single stacks, double stacks, and various nozzle and front end designs, along with comparing steam injectors. Also included are a series of horsepower curves and tonnage ratings charts across UP's fleet of steam locomotives. Along with the test reports and other items from the Paul Flebbe papers, this series of documents includes Richard Flebbe's biographical notes, "150 Years With Uncle Pete," documenting his grandfather's career from 1898 to 1947, his father's career from 1929 to 1974, and his own career with Union Pacific, as well his own separate history of UP's Omaha shop where he was employed from 1973 to its closing in 1989.