Railroad Archives Online
- FondsD0036 - George Werkema Collection
- Cyfres003 - Great Northern Railway Company (U.S.)
- Is-gyfres014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 003 - Freight Cars
- 440 mwy...
- Eitemimg869 - Great Northern Gondola 72949 at Albuquerque, New Mexico, 1980
- Eitemimg870 - Great Northern Gondola 73816 at Albuquerque, New Mexico, 1978
- Eitemimg871 - Great Northern Gondola 73865 at Albuquerque, New Mexico, 1978
- Eitemimg872 - Great Northern Gondola 74697 at Pasco, Washington, 1981
- Eitemimg873 - Great Northern Gondola 74815, undated
- Eitemimg874 - Great Northern Gondola 75698 at Hillyard, Washington, 1965
- Eitemimg875 - Great Northern Gondola 77373 at Lewistown, Montana, 1965
- Eitemimg876 - Great Northern Gondola 78404 at Albuquerque, New Mexico, 1978
- Eitemimg877 - Great Northern Gondola 78437 at Belen, New Mexico, 1985
- 70 mwy...