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
- 38 more...
- ItemWerkema098 - Northern Pacific 2152 on display in Auburn, Washington, in 1993.
- ItemWerkema099 - Northern Pacific 2152 on display in Auburn, Washington, in 1993.
- ItemWerkema100 - Northern Pacific 2152 at the Northern Pacific Railway Museum in Toppenish, Washington, in 2008.
- ItemWerkema101 - Northern Pacific 2152 at the Northern Pacific Railway Museum in Toppenish, Washington, in 2008.
- ItemWerkema102 - The tender of Northern Pacific 2152 at Northern Pacific Railway Museum in Topenish, Washington, in 2008.
- ItemWerkema392 - Northern Pacific steam locomotive 1070 near Wickersham, Washington, in 1977.
- ItemWerkema393 - Northern Pacific steam locomotive 1070 near Wickersham, Washington, in 1977.
- ItemWerkema394 - Northern Pacific steam locomotive 1070 near Wickersham, Washington, in 1977.
- ItemWerkema395 - Northern Pacific steam locomotive 1070 at Park, Washington, in 1977.
- 5 more...