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
- ItemStruc000688 - Great Northern Engineering Drawing, Signal Maintainers Building at Cut Bank, Montana, 1967
- ItemStruc000689 - Great Northern Engineering Drawing, Signal Maintainers Building at Cut Bank, Montana, 1967
- ItemStruc001685 - Great Northern Engineering Drawing, Signal Maintainer and Motor Car Building at Ballard, Washington, 1959
- ItemStruc001731 - Great Northern Engineering Drawing, Signal Maintainer's and Motor Car House at Fairchild, Washington, 1965
- ItemStruc001732 - Great Northern Engineering Drawing, Signal Maintainer's and Motor Car House at Fairchild, Washington, 1964
- 18 more...