Railroad Archives Online
- CollectionD0255 - Casey Adams Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3002 - Diesel Locomotives
- 61 more...
- ItemAdams GN - 030 R - Great Northern Diesel Locomotive 255 at Grand Forks, North Dakota in 1946
- ItemAdams GN - 031 R - Great Northern Diesel Locomotive 255 at Grand Forks, North Dakota in 1946
- ItemAdams GN - 032 R - Great Northern Diesel Locomotive 256 at Grand Forks, North Dakota in 1946
- ItemAdams GN - 033 R - Great Northern Diesel Locomotive 305 at Havre, Montana in 1946
- ItemAdams GN - 034 R - Great Northern Diesel Locomotive 305 at Great Falls, Montana in 1946
- ItemAdams GN - 035 R - Great Northern Diesel Locomotive 402 at Minot, North Dakota in 1946
- ItemAdams GN - 036 R - Great Northern Diesel Locomotive 410 at Gassman Coulee, North Dakota in 1946
- ItemAdams GN - 037 R - Great Northern Diesel Locomotive 410 at Minot, North Dakota in 1946
- ItemAdams GN - 038 R - Great Northern Diesel Locomotive 414 at Havre, Montana in 1946
- 21 more...