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
- 3678 more...
- ItemBB027241 - Great Northern Engineering Drawing: Design of Trusses, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027242 - Great Northern Engineering Drawing: Steel Layout, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027243 - Great Northern Engineering Drawing: General Details, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027244 - Great Northern Engineering Drawing: Piers 8 and 9 - General Plan, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027245 - Great Northern Engineering Drawing: Design of Pier 7, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027246 - Great Northern Engineering Drawing: Pier and Pedestal South End, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027247 - Great Northern Engineering Drawing: Pier and Pedestal North End, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027248 - Great Northern Engineering Drawing: General Plan Abutment - Number 19, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027249 - Great Northern Engineering Drawing: Reinforcement Steel, Bridge 4 - Salmon Bay, Ballard, Washington, 1912
- 314 more...