Railroad Archives Online
- CollectionD0173 - Hal Will Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3003 - Freight Cars
- ItemMOHAI.90.24.11 - Great Northern Freight Train at Interbay, Washington in 1947.
- ItemMOHAI.90.24.11.light - Great Northern Freight Train at Interbay, Washington in 1947.
- ItemMOHAI.90.24.12 - Great Northern Freight Train at Interbay, Washington in 1947.