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
- 47 more...
- ItemWerkema396 - Northern Pacific steam locomotive 1070 at Park, Washington, in 1977.
- ItemWerkema397 - Northern Pacific steam locomotive 1070 at Wickersham, Washington, in 1977.
- ItemWerkema398 - Northern Pacific steam locomotive 1070 at Wickersham, Washington, in 1977.
- ItemWerkema640 - Northern Pacific steam tender at Pasco, Washington, in 1971.
- ItemWerkema641 - Northern Pacific steam tender at Pasco, Washington, in 1971.