Railroad Archives Online
- CollectionD0335.2 - Northern Pacific Railway Historical Association Depot Photograph Collection
- Seriesex: 001 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2003 - Railroads--Buildings and Structures
- Subseries Level 3002 - Depots and Freighthouses
- 41 more...
- ItemNPDepot0042 - The Northern Pacific Depot at Big Lake, Washington, circa 1910
- ItemNPDepot0043 - The Northern Pacific Depot at Big Timber, Montana, circa 1890
- ItemNPDepot0044 - The Northern Pacific Depot at Big Timber, Montana, 1911
- ItemNPDepot0045 - The Northern Pacific Depot at Big Timber, Montana, 1996
- ItemNPDepot0046 - The Northern Pacific Depot at Billings, Montana, circa 1890
- ItemNPDepot0047 - The Northern Pacific Depot at Billings, Montana, undated
- ItemNPDepot0048 - The Northern Pacific Depot at Billings, Montana, undated
- ItemNPDepot0049 - The Northern Pacific Depot at Billings, Montana, undated
- ItemNPDepot0050 - The Northern Pacific Depot at Billings, Montana, 1920s
- 611 more...