Railroad Archives Online
- ArquivoD0036 - George Werkema Collection
- Série003 - Great Northern Railway Company (U.S.)
- Subsérie014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 004 - Railroad Passenger Cars
- 36 mais...
- Itemimg315 - Great Northern Passenger Car 1292 at Milwaukee, Wisconsin, 1992
- Itemimg316 - Great Northern Passenger Car 1295 at Denver, Colorado, 1966
- Itemimg317 - Great Northern Passenger Car 1335, undated
- Itemimg318 - Great Northern Passenger Car 1384 at Bellevue, Ohio, 1991
- Itemimg319 - Great Northern Passenger Car 2628, undated
- Itemimg320 - Great Northern Passenger Car 2636, 1970
- Itemimg321 - Great Northern Observation Car, undated