Railroad Archives Online
- CollectionD0036 - George Werkema Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3001 - Steam Locomotives
- 30 more...
- ItemWerkema090 - Northern Pacific 924 at the Northwest Railway Museum in Snoqualmie, Washington, in 2005.
- ItemWerkema091 - Northern Pacific 1356 on display in Missoula, Montana in 1997.
- ItemWerkema092 - Northern Pacific 1382 on display in Helena, Montana in 2003.
- ItemWerkema093 - Northern Pacific 1382 on display in Helena, Montana in 2003.
- ItemWerkema094 - Northern Pacific 2152 on display in Auburn, Washington, in 1993.
- ItemWerkema095 - Northern Pacific 2152 on display in Auburn, Washington, in 1993.
- ItemWerkema096 - Northern Pacific 2152 on display in Auburn, Washington, in 1993.
- ItemWerkema097 - Northern Pacific 2152 on display in Auburn, Washington, in 1993.
- ItemWerkema098 - Northern Pacific 2152 on display in Auburn, Washington, in 1993.
- 13 more...