Railroad Archives Online
- CollectionD0255 - Casey Adams Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2003 - Railroads--Buildings and Structures
- Subseries Level 3009 - Railroad cars--Maintenance and repair
- ItemCRAGNS001 - Great Northern Roundhouse Minot, North Dakota, 1947