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
- 6061 more...
- ItemBB026921 - Northern Pacific Engineering Drawing: Plan Bents 57 to 59, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026922 - Northern Pacific Engineering Drawing: Plan of I - Beam Girder, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026923 - Northern Pacific Engineering Drawing: Plan of I - Beam Girder, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026924 - Northern Pacific Engineering Drawing: Plan of I - Beam Girder, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- ItemBB026925 - Northern Pacific Engineering Drawing: Column Schedule and Piers, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, undated
- 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
- 1658 more...