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
- 3688 more...
- ItemBB027251 - Great Northern Engineering Drawing: General Plan, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027252 - Great Northern Engineering Drawing: Reinforcement Steel, Bridge 4 - Salmon Bay, Ballard, Washington, 1912
- ItemBB027253 - Great Northern Engineering Drawing: Bridge Number 4 - Section, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027254 - Great Northern Engineering Drawing: Bill - Abutment Bars, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027255 - Great Northern Engineering Drawing: Piers 10 and 11, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027256 - Great Northern Engineering Drawing: Plan of Pier 6, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027257 - Great Northern Engineering Drawing: Details Ballast Deck, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027258 - Great Northern Engineering Drawing: Loads and Pressures, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027259 - Great Northern Engineering Drawing: Preliminary Layout, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- 304 more...