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
- 3453 more...
- ItemBB027012 - Great Northern Engineering Drawing: Bridge Number 17 General Plan, Bridge 17 - Stillaguamish River, North of Silvana, Washington, 1904
- ItemBB027013 - Great Northern Engineering Drawing: 150 Foot Through Howe Truss, Bridge 17 - Stillaguamish River, North of Silvana, Washington, undated
- ItemBB027014 - Great Northern Engineering Drawing: 150 Foot Through Howe Truss, Bridge 17 - Stillaguamish River, North of Silvana, Washington, undated
- ItemBB027015 - Great Northern Engineering Drawing: Bridge Number 17 Map, Bridge 17 - Stillaguamish River, North of Silvana, Washington, undated
- ItemBB027016 - Great Northern Engineering Drawing: 150 Foot Through Howe Truss, Bridge 17 - Stillaguamish River, North of Silvana, Washington, undated
- ItemBB027017 - Great Northern Engineering Drawing: Survey Plan, Bridge 17 - Stillaguamish River, North of Silvana, Washington, 1920
- ItemBB027018 - Great Northern Engineering Drawing: General Plan, Bridge 17 - Stillaguamish River, North of Silvana, Washington, undated
- ItemBB027019 - Great Northern Engineering Drawing: Details of Piers, Bridge 17 - Stillaguamish River, North of Silvana, Washington, undated
- ItemBB027020 - Great Northern Engineering Drawing: Details of Piers, Bridge 17 - Stillaguamish River, North of Silvana, Washington, undated
- 539 more...