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
- 6074 more...
- 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
- ItemBB026939 - Northern Pacific Engineering Drawing: Roadway Reinforcement, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, 1910
- ItemBB026940 - Northern Pacific Engineering Drawing: Catch Basin and Drainpipe, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026941 - Northern Pacific Engineering Drawing: Shop Plan - Bill of Material, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026942 - Northern Pacific Engineering Drawing: Shop Plan - Bill of Material, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- 1645 more...