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
- 122 more...
- ItemBB021043 - Great Northern Engineering Drawing: Shop Plan - 32 Foot Through Plate Girder, Bridge 455, East of Snohomish, Washington, undated
- ItemBB021044 - Great Northern Engineering Drawing: Steel Repairs - Truss Span, Bridge 455, East of Snohomish, Washington, undated
- ItemBB021045 - Great Northern Engineering Drawing: Steel Repairs - Truss Span, Bridge 455, East of Snohomish, Washington, undated
- ItemBB021046 - Great Northern Engineering Drawing: Renew Fender Pier, Bridge 455, East of Snohomish, Washington, 1947
- ItemBB021047 - Great Northern Engineering Drawing: Shear Pier Repairs, Bridge 455, East of Snohomish, Washington, 1947
- ItemBB021048 - Great Northern Engineering Drawing: South End Fender Pier, Bridge 455, East of Snohomish, Washington, undated
- ItemBB021049 - Great Northern Engineering Drawing: Steel Repairs, Bridge 455, East of Snohomish, Washington, 1952
- ItemBB021050 - Great Northern Engineering Drawing: Deck Plan, Bridge 455, East of Snohomish, Washington, undated
- ItemBB021051 - Great Northern Engineering Drawing: General Plan, Bridge 455, East of Snohomish, Washington, 1953
- 3870 more...