Railroad Archives Online
- FondsD0036 - George Werkema Collection
- Serie003 - Great Northern Railway Company (U.S.)
- Teilserie014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 006 - Cabooses (Railroads)
- 14 mehr...
- Objektimg217 - Great Northern Caboose X432 at Hillyard, Washington, 1965
- Objektimg218 - Great Northern Caboose X443 at Rio Vista, California, 1991
- Objektimg219 - Great Northern Caboose X461 at Havre, Montana, 1972
- Objektimg220 - Great Northern Caboose X527 at Great Falls, Montana, 1974
- Objektimg221 - Great Northern Caboose X599, 1969
- Objektimg222 - Great Northern Caboose X679, 1960
- Objektimg223 - Great Northern Caboose at Issaquah, Washington, 1992
- Objektimg224 - Great Northern Caboose at Issaquah, Washington, 1992
- Objektimg225 - Great Northern Caboose at Issaquah, Washington, 1992