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
- 6109 more...
- ItemBB026969 - Northern Pacific Engineering Drawing: General Plan, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026970 - Northern Pacific Engineering Drawing: Signal Bridge F, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026971 - Northern Pacific Engineering Drawing: Signal Bridges D and E, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026972 - Northern Pacific Engineering Drawing: Signal Bridge D, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026973 - Northern Pacific Engineering Drawing: Signal Bridge E, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026974 - Northern Pacific Engineering Drawing: Signal Bridge D, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026975 - Northern Pacific Engineering Drawing: Existing Cantilever Crossbeam, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026976 - Northern Pacific Engineering Drawing: Signal Bridge G, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026977 - Northern Pacific Engineering Drawing: Signal Bridge G, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- 1610 more...