Railroad Archives Online
- CollectionD0173A - Hal Will Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3004 - Railroad Passenger Cars
- ItemMOHAI.90.24.36 - Great Northern Passenger Cars at Seattle, Washington in 1947.
- ItemMOHAI.90.24.36.light - Great Northern Passenger Cars at Seattle, Washington in 1947.
- ItemMOHAI.90.24.37 - Great Northern Employee at Interbay, Washington in 1947.
- ItemMOHAI.90.24.38 - Great Northern Employee at Interbay, Washington in 1947.
- ItemMOHAI.90.24.39 - Great Northern Employees at Interbay, Washington in 1947.
- ItemMOHAI.90.24.40 - Great Northern Passenger Car at Seattle, Washington in 1947.
- ItemMOHAI.90.24.41 - Great Northern Passenger Car at Seattle, Washington in 1947.
- ItemMOHAI.90.24.42 - Great Northern Passenger Car 1194 - Marias River at Seattle, Washington in 1947.