Railroad Archives Online
- CollectionD0011 - James M. Fredrickson Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3002 - Diesel locomotives
- 608 more...
- ItemJMF02-03834.2 - Northern Pacific diesel locomotive 221 at Tacoma, Washington, in 1965.
- ItemJMF02-03835.0 - Northern Pacific diesel locomotive 284 at Tacoma, Washington, in 1967.
- ItemJMF02-03835.1 - Northern Pacific diesel locomotive 246 at Tacoma, Washington, in 1967.
- ItemJMF02-03835.2 - Northern Pacific diesel locomotive 246 at Tacoma, Washington, in 1967.
- ItemJMF02-03836.0 - Northern Pacific diesel locomotive 5401 at Portland-Hoyt Street, Oregon, in 1967.
- ItemJMF02-03836.1 - Northern Pacific diesel locomotive 5401 at Portland-Hoyt Street, Oregon, in 1967.
- ItemJMF02-03838.0 - Northern Pacific diesel locomotive 6052A at Tacoma, Washington, in 1969.
- ItemJMF02-03840.0 - Northern Pacific diesel locomotive 250 at Tacoma, Washington, in 1970.
- ItemJMF02-03840.1 - Northern Pacific diesel locomotive 250 at Tacoma, Washington, in 1970.
- 32 more...