Railroad Archives Online
- FondsD0036 - George Werkema Collection
- Série004 - Northern Pacific Railroad Company
- Sous-série014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 001 - Steam Locomotives
- PièceWerkema060 - Northern Pacific 1070 stored in Snoqualime, Washington in 1956.
- PièceWerkema061 - Northern Pacific 1070 near Park, Washington, in 1977.
- PièceWerkema062 - Northern Pacific 1070 on Lake Whatcom Railway in Wickersham, Washington, in 1977.
- PièceWerkema063 - Northern Pacific 1070 arrives Wickersham, Washington, on the Lake Whatcom Railway in 1977.
- PièceWerkema064 - Northern Pacific 1070 turns on the wye at Wickersham, Washington, in 1977.
- 47 en plus...