Railroad Archives Online
- CollectionD0335.2 - Northern Pacific Railway Historical Association Depot Photograph Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2003 - Railroads--Buildings and Structures
- Subseries Level 3002 - Depots and Freighthouses
- 592 more...
- ItemNPDepot0594 - Northern Pacific Depot at Trident, Montana, undated
- ItemNPDepot0595 - Northern Pacific Depot at Trident, Montana, undated
- ItemNPDepot0596 - Northern Pacific Depot at Trout Creek, Montana, undated
- ItemNPDepot0597 - Northern Pacific Depot at Trout Creek, Montana, undated
- ItemNPDepot0598 - Northern Pacific Depot at Troy, Idaho, undated
- ItemNPDepot0599 - Northern Pacific Depot at Turtle Lake, North Dakota, 1972
- ItemNPDepot0600 - Northern Pacific Depot at Underwood, Minnesota, undated
- ItemNPDepot0601 - Northern Pacific Depot at Underwood, Minnesota, circa 1910
- ItemNPDepot0602 - Northern Pacific Depot at Underwood, Minnesota, undated
- 60 more...