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
- 3848 more...
- ItemBB027412 - Great Northern Engineering Drawing: Shop Plan - Details Portal, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027413 - Great Northern Engineering Drawing: Shop Plan - Details Portal, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027414 - Great Northern Engineering Drawing: Shop Plan - Details Strut, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027415 - Great Northern Engineering Drawing: Design Telegraph Wire Towers, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027416 - Great Northern Engineering Drawing: Shop Plan - End Posts, Bridge 424, West of Miller River, Washington, 1907
- ItemBB027417 - Great Northern Engineering Drawing: Shop Plan - Bottom Chords, Bridge 424, West of Miller River, Washington, 1907
- ItemBB027418 - Great Northern Engineering Drawing: Shop Plan - End Struts, Bridge 424, West of Miller River, Washington, 1907
- ItemBB027419 - Great Northern Engineering Drawing: Shop Plan - Floor Beams, Bridge 424, West of Miller River, Washington, 1907
- ItemBB027420 - Great Northern Engineering Drawing: Shop Plan - Shoes, Roller, Bridge 424, West of Miller River, Washington, 1907
- 144 more...