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
- 110 more...
- ItemBB021031 - Great Northern Engineering Drawing: General Plan, Bridge 455, East of Snohomish, Washington, 1940
- ItemBB021032 - Great Northern Engineering Drawing: General Plan, Bridge 455, East of Snohomish, Washington, undated
- ItemBB021033 - Great Northern Engineering Drawing: Details - Piers Number 10A and 40A, Bridge 455, East of Snohomish, Washington, undated
- ItemBB021034 - Great Northern Engineering Drawing: 150 Truss Span Reinforcement, Bridge 455, East of Snohomish, Washington, undated
- ItemBB021035 - Great Northern Engineering Drawing: 250 Draw Span Reinforcement, Bridge 455, East of Snohomish, Washington, undated
- ItemBB021036 - Great Northern Engineering Drawing: Shoes - 250 Draw Span, Bridge 455, East of Snohomish, Washington, undated
- ItemBB021037 - Great Northern Engineering Drawing: Stringer Lateral Repairs, Bridge 455, East of Snohomish, Washington, 1939
- ItemBB021038 - Great Northern Engineering Drawing: 4 - 60 Foot Deck Plate Girder (DPG) Span, Bridge 455, East of Snohomish, Washington, undated
- ItemBB021039 - Great Northern Engineering Drawing: Shop Plan - 60 Foot Deck Plate Girder (DPG), Bridge 455, East of Snohomish, Washington, undated
- 3882 more...