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
- 2621 more...
- ItemBB025970 - Great Northern Engineering Drawing: Contour Map and Profile, Bridge 455, East of Snohomish, Washington, undated
- ItemBB025971 - Great Northern Engineering Drawing: Contour Map and Profile, Bridge 455, East of Snohomish, Washington, undated
- ItemBB025972 - Great Northern Engineering Drawing: Washout Troubles, Bridge 455, East of Snohomish, Washington, undated
- ItemBB025973 - Great Northern Engineering Drawing: Washout Troubles, Bridge 455, East of Snohomish, Washington, undated
- ItemBB025974 - Great Northern Engineering Drawing: Washout Troubles, Bridge 455, East of Snohomish, Washington, undated
- ItemBB025975 - Great Northern Engineering Drawing: Profile - Dike, Bridge 455, East of Snohomish, Washington, undated
- ItemBB025976 - Great Northern Engineering Drawing: Profile - Dike, Bridge 455, East of Snohomish, Washington, undated
- ItemBB025977 - Great Northern Engineering Drawing: Plan - Dike, Bridge 455, East of Snohomish, Washington, undated
- ItemBB025978 - Great Northern Engineering Drawing: Cross Section and Profile, Bridge 455, East of Snohomish, Washington, undated
- 1371 more...