Railroad Archives Online
- CollectionD0036 - George Werkema Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3003 - Freight Cars
- 498 more...
- Itemimg927 - Great Northern Flatcar 65707 at Castle Rock, Colorado, 1965
- Itemimg928 - Great Northern Flatcar 64547 at Denver, Colorado, 1965
- Itemimg929 - Great Northern Flatcar 64547 at Denver, Colorado, 1965
- Itemimg930 - Great Northern Flatcar 64547 at Denver, Colorado, 1965
- Itemimg931 - Great Northern Flatcar 65727 at Bushnell, Illinois, 1992
- Itemimg932 - Great Northern Flatcar 66066 at Boulder, Colorado, 1965
- Itemimg933 - Great Northern Flatcar 67291 at Issaquah, Washington, 1992
- Itemimg934 - Great Northern Flatcar 68604 at Pasco, Washington, 1981
- Itemimg935 - Great Northern Flatcar 68609 at Pasco, Washington, 1981
- 12 more...