Railroad Archives Online
- CollectionD0011 - James M. Fredrickson Collection
- Series008 - Union Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3002 - Diesel locomotives
- ItemJMF02-03826.0 - Union Pacific diesel locomotive UP 141C at Tacoma-McCarver Street, Washington, in 1962.
- ItemJMF15-06731.0 - Union Pacific Railroad diesel locomotive number 3252 at Menlo Park, California in 1975.
- ItemJMF13-05750.0 - Union Pacific Railroad diesel locomotive number 903 at Tacoma, Washington, undated.
- ItemJMF13-05752.0 - Union Pacific Railroad diesel locomotive number 912 at Dishman, Washington in 1953.
- ItemJMF13-05753.0 - Union Pacific Railroad diesel locomotive number 960 at Tacoma, Washington in 1975.
- ItemJMF13-05753.1 - Union Pacific Railroad diesel locomotive number 960 at Tacoma, Washington in 1975.
- ItemJMF13-05754.0 - Union Pacific Railroad diesel locomotive number 962 at Hinkle, Oregon in 1964.
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