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
- 2984 more...
- ItemBB026456 - Great Northern Engineering Drawing: Friction Block - Gas Engine, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026457 - Great Northern Engineering Drawing: Repairs - Solenoid Breakers, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026458 - Great Northern Engineering Drawing: Repairs - Operating Strut Bracket, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026459 - Great Northern Engineering Drawing: Mitered Rails, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026460 - Great Northern Engineering Drawing: Deck Plan, Bridge 4 - Salmon Bay, Ballard, Washington, 1944
- ItemBB026461 - Great Northern Engineering Drawing: Deck Plan, Bridge 4 - Salmon Bay, Ballard, Washington, 1944
- ItemBB026462 - Great Northern Engineering Drawing: Deck Plan, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026463 - Great Northern Engineering Drawing: Fender - Pier Number 7, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026464 - Great Northern Engineering Drawing: Guide - Pier Number 8, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- 1008 more...