Railroad Archives Online
- CollectionE0357 - Wade J Stevenson Collection
- Series010 - Other Railroads
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3004 - Railroad Passenger Cars
- ItemGNRHS.55.03.22 - Chicago, Burlington and Quincy Railroad Great Dome 1385 at North Portal, Seattle, Washington, undated
- ItemGNRHS.55.04.38 - Pennsylvania Railroad Observation Car 7152 "William Chamberlain Patterson" in Washington State, undated