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
- 61 more...
- ItemJMF03-01907.0 - Northern Pacific diesel locomotive number 220 at Tacoma, Washington, in 1970.
- ItemJMF03-01908.0 - Northern Pacific diesel locomotive number 221 at Tacoma, Washington, in 1970.
- ItemJMF03-01909.0 - Northern Pacific diesel locomotive number 222 at Auburn, Washington.
- ItemJMF03-01910.0 - Northern Pacific diesel locomotive number 224 at Tacoma, Washington, in 1970.
- ItemJMF03-01910.1 - Northern Pacific diesel locomotive number 226 at Tacoma, Washington, in 1970.
- ItemJMF03-01911.0 - Northern Pacific diesel locomotive number 227 at Tacoma, Washington, in 1970.
- ItemJMF03-01912.0 - Northern Pacific diesel locomotive number 228 at Tacoma, Washington, in 1970.
- ItemJMF03-01912.1 - Northern Pacific diesel locomotive number 228 at Nisqually, Washington.
- ItemJMF03-01913.0 - Northern Pacific diesel locomotive number 230 at Auburn, Washington, in 1968.
- 579 more...