Railroad Archives Online
- CollectionE0437 - Jim Parker Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3002 - Diesel Locomotives
- 13 more...
- Item47235 - Northern Pacific Diesel Locomotive Number 377, Pasco, Washington, 1968
- Item47236 - Northern Pacific Diesel Locomotive Number 384, Pasco, Washington, 1969
- Item47237 - Northern Pacific Diesel Locomotive Number 1994, Livingston, Montana
- Item47238 - Northern Pacific Diesel Locomotive Number 3600, 1967
- Item47274 - Northern Pacific Diesel Locomotive Number 3605, Ritzville, Washington, 1968
- Item47275 - Northern Pacific Diesel Locomotive Number 3609, Pasco, Washington, 1968
- Item47276 - Northern Pacific Diesel Locomotive Number 3616, Ellensburg, Washington, 1967
- Item47277 - Northern Pacific Diesel Locomotive Number 3616, Ellensburg, Washington, 1967
- Item47278 - Northern Pacific Diesel Locomotive Number 3620, Superior, Montana, 1968
- 18 more...