Railroad Archives Online
- FondiE0357 - Wade J Stevenson Collection
- Serija010 - Other Railroads
- Podserija014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 004 - Railroad Passenger Cars
- DokumentGNRHS.55.03.22 - Chicago, Burlington and Quincy Railroad Great Dome 1385 at North Portal, Seattle, Washington, undated
- DokumentGNRHS.55.04.38 - Pennsylvania Railroad Observation Car 7152 "William Chamberlain Patterson" in Washington State, undated