Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3001 - Bridges
- 6066 more...
- ItemBB026926 - Northern Pacific Engineering Drawing: Detail of Handrail and Socket for Trolley Pole, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026927 - Northern Pacific Engineering Drawing: Plan Brackets 51 to 53, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026928 - Northern Pacific Engineering Drawing: Bents, Counterports and Piling, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026929 - Northern Pacific Engineering Drawing: Location of Retaining Wall, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026930 - Northern Pacific Engineering Drawing: Brackets 16 - 17 - 18 and Details, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026931 - Northern Pacific Engineering Drawing: Brackets 11 to 15 and Piers, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026932 - Northern Pacific Engineering Drawing: Retaining Wall Bent 18 - 15, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026933 - Northern Pacific Engineering Drawing: Retaining Wall Bent 13 - 11, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026934 - Northern Pacific Engineering Drawing: Retaining Wall - Counterforts, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- 1653 more...