Railroad Archives Online
- CollectionD0036 - George Werkema Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2003 - Railroads--Buildings and Structures
- Subseries Level 3002 - Depots/Freighthouses
- 48 more...
- ItemWerkema478 - Northern Pacific depot at Kelso, Washington, in 1988.
- ItemWerkema486 - Northern Pacific depot in a park at Litchville, North Dakota, in 1998.
- ItemWerkema487 - Northern Pacific depot in a park at Litchville, North Dakota, in 1998.
- ItemWerkema488 - Northern Pacific depot bay-window at Litchville, North Dakota, in 1998.
- ItemWerkema505 - Northern Pacific depot at Raymond, Washington, in 1975.
- ItemWerkema509 - The Amtrak depot at Spokane, Washington, in 1990.
- ItemWerkema510 - The Amtrak depot at Spokane, Washington, in 1990.
- ItemWerkema511 - The Amtrak depot at Spokane, Washington, in 1990.
- ItemWerkema517 - Northern Pacific depot at Sunnyside, Washington, in 2008.
- 19 more...