Railroad Archives Online
- FondiE0483 - Great Northern Railway Historical Society Standard Signal Plans Collection
- Serija003 - Great Northern Railway Company (U.S.)
- Podserija009 - Engineering Records
- 008 - Physical plant drawing
- 005 - Signals
- 33 more...
- Dokument167-32A - Great Northern Railway Standard Signal Plans; Installation of Weber Number 3 Insulated Rail Joints, 1914
- Dokument167-32B - Great Northern Railway Standard Signal Plans; Installation of Weber Number 1 Insulated Rail Joints Continuous Number 1 for 75 Pound-77-1/2 Pound-80 Pound Rail, 1918
- Dokument167-32C - Great Northern Railway Standard Signal Plans; Installation of Weber Number 1 Insulated Rail Joints Continuous Number 1 for 60 Pound-68 Pound-75 Pound-87 Pound Rail, 1918
- Dokument167-32J - Great Northern Railway Standard Signal Plans; Wood Fillers End Post - Shoe Angle With Plate, 1925
- Dokument167-42A - Great Northern Railway Standard Signal Plans; Insulated Spread Rod, 1923
- Dokument167-46A - Great Northern Railway Standard Signal Plans; Signal, Semaphore Train Order - Location Number 1, Tools, 1917
- Dokument167-46B - Great Northern Railway Standard Signal Plans; Signal, Semaphore Train Order - Location Number 2, Tools, 1917
- Dokument167-46C - Great Northern Railway Standard Signal Plans; Tools, Signal, 1927
- Dokument167-48A - Great Northern Railway Standard Signal Plans; Train Order Signal - Location Number 1, 1917
- 86 more...