Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3005 - Signals
- 14 more...
- ItemStruc009340 - Great Northern Engineering Drawing, Signal Maintainer and Track Forces Building, Metal 20 Foot X 56 Foot at Harlem, Montana, 1964
- ItemStruc009341 - Great Northern Engineering Drawing, Signal Maintainer and Track Forces Building, Metal 20 Foot X 56 Foot at Harlem, Montana, 1964
- ItemStruc009357 - Great Northern Engineering Drawing, Signal Maintainer's and Motor Car House at Frazer, Montana, 1957
- ItemStruc009399 - Great Northern Engineering Drawing, Signal Maintainer's and Motor Car House at Glasgow, Montana, 1956
- ItemStruc009479 - Great Northern Engineering Drawing, Signal Maintainer and Motor Car Building, 20 Foot X 60 Foot at Edmonds, Washington, 1967
- ItemStruc009480 - Great Northern Engineering Drawing, Signal Maintainer and Motor Car Building, 20 Foot X 60 Foot at Edmonds, Washington, 1966
- ItemStruc009481 - Great Northern Engineering Drawing, Signal Maintainer and Motor Car Building, 20 Foot X 60 Foot at Edmonds, Washington, 1966
- ItemStruc009485 - Great Northern Engineering Drawing, Signal Maintenance Building, 24 Foot X 24 Foot at Chinook, Montana, 1967
- ItemStruc009486 - Great Northern Engineering Drawing, Signal Maintenance Building, 24 Foot X 24 Foot at Chinook, Montana, 1966