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
- 3396 more...
- ItemBB026872 - Great Northern Engineering Drawing: Shop Plan - Details, Spans, Bridge 455, East of Snohomish, Washington, undated
- ItemBB026873 - Great Northern Engineering Drawing: Shop Plan - Details, Span, Bridge 455, East of Snohomish, Washington, undated
- ItemBB026874 - Great Northern Engineering Drawing: Deck Plan, Bridge 455, East of Snohomish, Washington, 1943
- ItemBB026875 - Great Northern Engineering Drawing: Firebreak Span, Bridge 455, East of Snohomish, Washington, undated
- ItemBB026876 - Great Northern Engineering Drawing: Masonry and Deck Detail, Bridge 455, East of Snohomish, Washington, 1947
- ItemBB026877 - Great Northern Engineering Drawing: Shop Plan - 40 Foot Beam, Bridge 455, East of Snohomish, Washington, undated
- ItemBB026878 - Great Northern Engineering Drawing: Refuge Platform, Bridge 455, East of Snohomish, Washington, undated
- ItemBB026879 - Great Northern Engineering Drawing: Refuge Platform, Bridge 455, East of Snohomish, Washington, undated
- ItemBB026880 - Great Northern Engineering Drawing: General Plan, Bridge 455, East of Snohomish, Washington, 1952
- 596 more...