UP4019 Big Boy

   North East Rails  
Union Pacific 4-6-6-4 Challenger
Steam Photo Roster

CN6200 Steam

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Union Pacific "Big Boy" | UP 9000 4-12-2 | UP Challenger 4-6-6-4

Also see: Dual-Drive Steam Engines | Locomotive Specifications

Unofficial Union Pacific 4-6-6-4 Challenger Steam Photo Roster
Builder: Alco Fuel: 25 tons
Cyclinders:(4) 21 x 32"Water: 
Weight:1,071,000 lbsDia. Drivers:69"
Steam Pressure:280 PSI lbsTractive Effort:97,400 lbs
Photo Contributions and Corrections Welcome
Click on a Engine Number to view it. Click on name to contact the OWNER of the photo
Road Nbr Photographer Date Taken Location Builder
3900Otto Perry(2)1936Green River WYSchenectady 1936
3901Raymond Thompson  Schenectady 1936
3901Otto Perry(2)1937Green River WYSchenectady 1936
3902Otto Perry(2)1937Green River WYSchenectady 1936
3903Otto Perry(2)1937Green River WYSchenectady 1936
3904Otto Perry(2)1937Ogden UTSchenectady 1936
3905Otto Perry(2)1938Laramie WYSchenectady 1936
3906Otto Perry(2)1939Laramie WYSchenectady 1936
3907Otto Perry(2)1936Green River WYSchenectady 1936
3908   Schenectady 1936
3909Otto Perry(2)1937Green River WYSchenectady 1936
3910Otto Perry(2)1937Green River WYSchenectady 1936
3911Otto Perry(2)1937Ogden UTSchenectady 1936
3912Otto Perry(2)1937Green River WYSchenectady 1936
3913Otto Perry(2)1937Green River WYSchenectady 1936
3914Otto Perry(2)1937Rawlins WYSchenectady 1936
3915Otto Perry(2)1942Laramie WYSchenectady 1937
3815[3915]Rick Hamman  Schenectady 1937
3916   Schenectady 1937
3917Otto Perry(2)1938Laramie WYSchenectady 1937
3918Otto Perry(2)1937Laramie WYSchenectady 1937
3919   Schenectady 1937
3920Otto Perry(2)1937Ogden UTSchenectady 1937
3921Otto Perry(2)1937Echo UTSchenectady 1937
3922Otto Perry(2)1937Cheyenne WYSchenectady 1937
3923Otto Perry(2)1939Laramie WYSchenectady 1937
3924   Schenectady 1937
3925Otto Perry(2)1937Green River WYSchenectady 1937
3926   Schenectady 1937
3927Otto Perry(2)1937Green River WYSchenectady 1937
3928Otto Perry(2)1941Green River WYSchenectady 1937
3929   Schenectady 1937
3930Otto Perry(2)1939Laramie WYSchenectady 1937
3931Otto Perry(2)1937Hanna WYSchenectady 1937
3932Bud Laws(3)  Schenectady 1937
3932Otto Perry(2)1939Laramie WYSchenectady 1937
3933   Schenectady 1937
3934Otto Perry(2)1937Cheyenne WYSchenectady 1937
3935Otto Perry(2)1940Pasadena Jct. CASchenectady 1937
3936Otto Perry(2)1938Baker ORSchenectady 1937
3936Bud Laws(3)  Schenectady 1937
3937Otto Perry(2)1938La Grande ORSchenectady 1937
3938Howard Ameling(3)1964North Platte NBSchenectady 1937
3938Jim Sands  Schenectady 1937
3939Otto Perry(2)1946Corlett WYSchenectady 1937
3939 1938Los Angles CASchenectady 1937
3940   Schenectady 1944
3941Ron Healy  Schenectady 1944
3941Otto Perry(2)1959Cheyenne WYSchenectady 1944
3942Otto Perry(2)1948Cheyenne WYSchenectady 1944
3943Otto Perry(2)1946Denver COSchenectady 1944
3944Otto Perry(2)1952Hermosa WYSchenectady 1944
3946Otto Perry(2)1949Archer WYSchenectady 1944
3947   Schenectady 1944
3948Otto Perry(2)1952Granite Canon WYSchenectady 1944
3949Otto Perry(2)1946Denver COSchenectady 1944
3950Richard Kurtz  Schenectady 1944
3950   Schenectady 1944
3951Otto Perry(2)1946Denver COSchenectady 1942
3952Otto Perry(2)1953Rock River WYSchenectady 1942
3953Dick Kindig - JT1951;ShermanHill CASchenectady 1944
3954Otto Perry(2)1942Laramie WYSchenectady 1942
3955Otto Perry(2)1954Cheyenne WYSchenectady 1942
3956Otto Perry(2)1952Dale Creek WYSchenectady 1942
3957Otto Perry(2)1942Laramie WYSchenectady 1942
3958Otto Perry(2)1949Rock River WYSchenectady 1942
3959Otto Perry(2)1958North Platte NBSchenectady 1942
3960Otto Perry(2)1942Laramie WYSchenectady 1942
3961Joseph Testagrose19491atLaramie WYSchenectady 1942
3962Otto Perry(2)1942Bosler WYSchenectady 1942
3963Otto Perry(2)1958Cheyenne WYSchenectady 1942
3964Otto Perry(2)1952Henderson COSchenectady 1942
3965Otto Perry(2)1958Laramie WYSchenectady 1942
3966Otto Perry(2)1959Cheyenne WYSchenectady 1942
3967Otto Perry(2)1955Laramie WYSchenectady 1942
3968Bill Navari
 Laramie WYSchenectady 1942
3968Otto Perry(2)1959Cheyenne WYSchenectady 1942
3969HK Vollrath(3)1948Cheyenne WYSchenectady 1937
3975G.Best1946 Los Angeles CASchenectady 1937
3976Otto Perry(2)1946Denver COSchenectady 1943
3977Glen Beans  Schenectady 1937
3978   Schenectady 1937
3979  Los Angels CASchenectady 1937
3980HK Vollrath(3)1950Denver COSchenectady 1937
3981Otto Perry(2)1946Brighton COSchenectady 1943
3981 F. B. Thompson Union Stat Tacoma WASchenectady 1943
3982Otto Perry(2)1946Borie WYSchenectady 1943
3983   Schenectady 1937
3984   Schenectady 1937
3985Brett Wirick2000Las Vegas NVSchenectady 1943
3985Glen Beans1990Ohmaha NBSchenectady 1943
3985Skip Weythman2004North Platte, NBSchenectady 1943
3985Otto Perry(2)1949Hermosa WYSchenectady 1943
3986Otto Perry(2)1955Hermosa WYSchenectady 1943
3987Otto Perry(2)1955Laramie WYSchenectady 1943
3987HK Vollrath(3)1948Cheyenne WYSchenectady 1937
3988   Schenectady 1937
3989HK Vollrath(3)1949Laramie WYSchenectady 1937
3990Otto Perry(2)1954Cheyenne WYSchenectady 1943
3992 1983Pima (sic) Creek Jct COSchenectady 1943
3992Otto Perry(2)1949Rawlins WYSchenectady 1943
3993Otto Perry(2)1953Hermosa WYSchenectady 1943
3994Otto Perry(2)1951Sherman WYSchenectady 1943
3996Otto Perry(2)1953Laramie WYSchenectady 1943
3996HK Vollrath(3)1949Laramie WYSchenectady 1937
3997Otto Perry(2)1949La Salle CO, (helper for 9043 )Schenectady 1943
3998© Gary Stuebben  Schenectady 1943
3999Otto Perry(2)1959Cheyenne WYSchenectady 1943
1. From the Collection of Stephen Foster. The original owner is listed, if known.
2. From the Collection of Denver Public Library   Note: There are more photos of the UP 4-6-6-4's here. Enter "Union Pacific AND 3900", and increment the number for a new search.
3. From the Collection of Bud Laws. The original owner is listed, if known.
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North East Rails  © Clint Chamberlin.
Photos for personal use only. All rights reserved by original owner of image.
Reproduction or redistribution in any form without express written permission is prohibited.