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
- 64 more...
- 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.
- ItemJMF03-01914.0 - Northern Pacific diesel locomotive number 230 at Auburn, Washington, in 1968.
- ItemJMF03-01915.0 - Northern Pacific diesel locomotive number 233 at Tacoma, Washington, in 1966.
- ItemJMF03-01916.0 - Northern Pacific diesel locomotive number 234 at Auburn, Washington, in 1970.
- 576 more...