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
- 6070 more...
- 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
- ItemBB026935 - Northern Pacific Engineering Drawing: Retaining Wall - Counterforts, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026936 - Northern Pacific Engineering Drawing: Retaining Wall - Counterforts, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026937 - Northern Pacific Engineering Drawing: Retaining Wall - Counterforts, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026938 - Northern Pacific Engineering Drawing: Reinforcement Retaining Wall, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, 1910
- 1649 more...