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 3006 - Cabooses (Railroads)
- ItemJMF02-03826.1 - Union Pacific caboose at Tacoma-McCarver St, Washington, in 1962.
- ItemJMF13-05832.1 - Union Pacific Railroad caboose, undated.