Railroad Archives Online
- CollectionD0173 - Hal Will Collection
- Series010 - Other Railroads
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3001 - Steam Locomotives
- ItemMOHAI.90.24.47 - Steam Locomotive in Washington in 1947.
- ItemMOHAI.90.24.64 - Canadian Pacific Steam Locomotive 374 in British Columbia in 1955.