Union Pacific Railroad

The Union Pacific Railroad {{nyse|UNP}} is the largest railroad in the United States. Its primary AAR reporting mark is UP. Richard K. Davidson, who began his career as a Missouri Pacific brakeman in 1960, has headed Union Pacific Railroad since 1991 and parent Union Pacific Corporation since 1997. James R. Young is president and chief operating officer and Richard "Dick" K. Davidson is the CEO of the Railroad.

Preserved locomotives

In addition to the historic fleet outlined above kept by the Union Pacific itself, a large number of UP locomotives survive elsewhere. Many locomotives were donated to towns along the Union Pacific tracks, for instance, as well as locomotives donated to museums.

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• UP 737 - A 4-4-0 in the collection of Steamtown National Historic Site.
• UP 4004, 4005, 4006, 4012, 4014, 4017, 4018, 4023 - Union Pacific Big Boy 4-8-8-4 articulated steam locomotives. Eight out of twenty-five still survive. Number 4018, currently residing at the Age of Steam Railroad Museum in Dallas, TX, almost saw a return to operation in 1998 when a film director proposed restoring the locomotive for use in a movie. However, it has been almost a year since anything has been heard of this proposal, and it is considered to have been only a whim. Many consider the Big Boys to have been the largest locomotives ever built.
• UP 6911 - One of the huge UP's DD40x locomotives, stored in the Comision Federal de Electricidad CFE Museum in Mexico City.
• UP 9000, a Union Pacific 9000 class 4-12-2 giant non-articulated freight locomotive, at the Los Angeles County Fairplex, Pomona, California.