Railroad Archives Online
- FondsE0437 - Jim Parker Collection
- Série003 - Great Northern Railway Company (U.S.)
- Sous-série014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 004 - Railroad Passenger Cars
- Pièce35336 - Great Northern Dome Passenger Car Number 1322, Wishram, Washington, 1967
- Pièce35337 - Great Northern Dome Passenger Car Number 1325, Wishram, Washington, 1969
- Pièce35338 - Great Northern Dome Passenger Car 1329, Chicago, Illinois, undated
- Pièce35339 - Great Northern Passenger Car 1254, Chicago, Illinois, October, 1968
- Pièce35340 - Great Northern Full Dome Passenger Car 1394, Chicago, Illinois, October 1969
- 1 en plus...