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
- 3411 more...
- ItemBB026887 - Great Northern Engineering Drawing: Deck Plan, Bridge 455, East of Snohomish, Washington, 1954
- ItemBB026888 - Great Northern Engineering Drawing: Deck Plan, Bridge 455, East of Snohomish, Washington, 1955
- ItemBB026889 - Great Northern Engineering Drawing: Trainmen's Walk, Bridge 455, East of Snohomish, Washington, undated
- ItemBB026890 - Great Northern Engineering Drawing: Deck Plan, Bridge 455, East of Snohomish, Washington, 1966
- ItemBB026891 - Great Northern Engineering Drawing: Deck Plan, Bridge 455, East of Snohomish, Washington, 1970
- ItemBB026892 - Great Northern Engineering Drawing: Underpinning of Piers - West Approach, Bridge 455, East of Snohomish, Washington, undated
- ItemBB026894 - Great Northern Engineering Drawing: 32 Foot Span Over Roadway, Bridge 455, East of Snohomish, Washington, undated
- ItemBB026895 - Great Northern Engineering Drawing: General and Masonry Plan, Bridge 455, East of Snohomish, Washington, undated
- ItemBB026896 - Great Northern Engineering Drawing: Water Elevations, Bridge 455, East of Snohomish, Washington, undated
- 581 more...