Railroad Archives Online
- ФондыD0036 - George Werkema Collection
- 003 - Great Northern Railway Company (U.S.)
- 014 - Photographs
- 003 - Railroads--Buildings and Structures
- 001 - Bridges
- 3 more...
- img1170 - Great Northern Bridge at Marysville, Washington, 1982
- img1171 - Great Northern Bridge at Marysville, Washington, 1982
- img1172 - Great Northern Bridge at Marysville, Washington, 1987
- img1173 - Great Northern Bridge at Marysville, Washington, 1987
- img1174 - Great Northern Bridge at Ferndale, Washington, 1966
- img1175 - Great Northern Bridge at Ferndale, Washington, 1966
- img1176 - Great Northern Bridge at Priest River, Idaho, 1990
- img1177 - Great Northern Bridge at Rock Island, Washington, 1987
- img1178 - Great Northern Bridge at Rock Island, Washington, 1988
- 17 more...