Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3002 - Depots and Freighthouses
- 1344 more...
- ItemStruc007777 - Northern Pacific Engineering Drawing, Depot at Trident, Montana, 1976
- ItemStruc007778 - Northern Pacific Engineering Drawing, Depot at Trident, Montana, 1976
- ItemStruc007779 - Northern Pacific Engineering Drawing, Depot at Trident, Montana, 1910
- ItemStruc007780 - Northern Pacific Engineering Drawing, Depot at Trident, Montana, 1910
- ItemStruc007781 - Northern Pacific Engineering Drawing, Depot at Trident, Montana, 1910
- ItemStruc007782 - Northern Pacific Engineering Drawing, Depot at Trident, Montana, 1910
- ItemStruc007783 - Northern Pacific Engineering Drawing, Depot at Trident, Montana, 1910
- ItemStruc008319 - Northern Pacific Engineering Drawing, Depot at Sand Point, Idaho, 1916
- ItemStruc008320 - Northern Pacific Engineering Drawing, Depot at Sand Point, Idaho, 1916
- 309 more...