Railroad Archives Online
- CollectionE0477 - BNSF Maps, Drawings and Records Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1009 - Engineering Records
- Subseries Level 3003 - Maintenance Facilities
- 29 more...
- ItemEBP1822 - Great Northern Technical Drawing, Heimdal, North Dakota, 1918
- ItemEBP1823 - Great Northern Technical Drawing, Heimdal, North Dakota, 1918
- ItemEBP1824 - Great Northern Technical Drawing, Heimdal, North Dakota, 1918
- ItemEBP1825 - Great Northern Technical Drawing, Heimdal, North Dakota, 1918
- ItemEBP1828 - Great Northern Technical Drawing, Heimdal, North Dakota, undated
- ItemEBP1923 - Great Northern Structure List, 1892
- ItemEBP1924 - Great Northern Structure Technical Drawing, 1892
- ItemEBP1925 - Great Northern Structure Technical Drawing, 1906
- ItemEBP1926 - Great Northern Structure Technical Drawing, 1924
- 194 more...