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
- 591 more...
- ItemJMF02-03809.0 - Northern Pacific diesel locomotive 231 at Titlow, Washington, in 1969.
- ItemJMF02-03812.0 - Northern Pacific diesel locomotive 137 at Tacoma, Washington.
- ItemJMF02-03813.0 - Northern Pacific diesel locomotive 6502C at Tacoma-McCarver St, Washington, in 1968.
- ItemJMF02-03814.0 - Northern Pacific diesel locomotive 6019A at Tacoma-McCarver St, Washington, in 1969.
- ItemJMF02-03815.0 - Northern Pacific diesel locomotive 6019A at Tacoma, Washington, in 1969.
- ItemJMF02-03816.0 - Northern Pacific diesel locomotive 335 at Tacoma-McCarver St, Washington, in 1962.
- ItemJMF02-03817.0 - Northern Pacific diesel locomotive 214 at Tacoma, Washington, in 1962.
- ItemJMF02-03817.1 - Northern Pacific caboose 1214 at Tacoma, Washington, in 1962.
- ItemJMF02-03819.0 - Northern Pacific diesel locomotive 218 at Ruston, Washington, in 1969.
- 49 more...