Railroad Archives Online
- FondsD0173A - Hal Will Collection
- Serie003 - Great Northern Railway Company (U.S.)
- Teilserie014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 003 - Freight Cars
- ObjektMOHAI.90.24.11 - Great Northern Freight Train at Interbay, Washington in 1947.
- ObjektMOHAI.90.24.11.light - Great Northern Freight Train at Interbay, Washington in 1947.
- ObjektMOHAI.90.24.12 - Great Northern Freight Train at Interbay, Washington in 1947.