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 3001 - Bridges
- 3135 more...
- ItemBB026607 - Great Northern Engineering Drawing: Shop Plan - End Locks, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026608 - Great Northern Engineering Drawing: Shop Plan - End Locks, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026609 - Great Northern Engineering Drawing: Shop Plan - Buffer Cylinder, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026610 - Great Northern Engineering Drawing: Diagram Electrical Connections, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026611 - Great Northern Engineering Drawing: Latch and Main Motor Drum, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026612 - Great Northern Engineering Drawing: Air Pipe and Conduit, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026613 - Great Northern Engineering Drawing: Details of Control Stand, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026614 - Great Northern Engineering Drawing: Gas Engine Pipe Connections, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026615 - Great Northern Engineering Drawing: Layout Operating House and Switchboard, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- 857 more...