Railroad Archives Online
- CollectionE0484 - Great Northern Railway Historical Society Depot Photograph Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2003 - Railroads--Buildings and Structures
- Subseries Level 3002 - Depots and Freighthouses
- 1002 more...
- Item42.52.02 - Great Northern Depot at Heimdal, North Dakota, undated
- Item37.04.02 - Great Northern Depot at Helena, Montana, undated
- Item42.53.01 - Great Northern Depot at Helena, Montana, undated
- Item42.53.02 - Great Northern Depot at Helena, Montana, undated
- Item42.53.03 - Great Northern freight house at Helena, Montana, undated
- Item42.53.04 - Great Northern Engine House at Helena, Montana, undated
- Item42.53.05 - Great Northern Yard Office at Helena, Montana, undated
- Item43.39.06 - Great Northern Depot at Helena, Montana, undated
- Item43.46.15 - Great Northern Depot at Helena, Montana, undated
- 1273 more...