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
- 23 more...
- ItemEBP1816 - Great Northern Technical Drawing, Heimdal, North Dakota, 1928
- ItemEBP1817 - Great Northern Technical Drawing, Heimdal, North Dakota, 1928
- ItemEBP1818 - Great Northern Technical Drawing, Heimdal, North Dakota, 1928
- ItemEBP1819 - Great Northern Technical Drawing, Heimdal, North Dakota, 1925
- ItemEBP1820 - Great Northern Technical Drawing, Heimdal, North Dakota, 1918
- ItemEBP1821 - Great Northern Technical Drawing, Heimdal, North Dakota, 1918
- 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
- 200 more...