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
- 6359 more...
- ItemBB028108 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Flange, Bridge 81 - Cowlitz River, South of Vader, Washington, undated
- ItemBB028109 - Northern Pacific Engineering Drawing: Shop Plan - Erection Diagram, Bridge 81 - Cowlitz River, South of Vader, Washington, undated
- ItemBB028110 - Northern Pacific Engineering Drawing: Arrangement Deck Plate Girder (DPG), Bridge 81 - Cowlitz River, South of Vader, Washington, undated
- ItemBB028111 - Northern Pacific Engineering Drawing: Stress Sheet, Bridge 81 - Cowlitz River, South of Vader, Washington, undated
- ItemBB028112 - Northern Pacific Engineering Drawing: General Detail of Truss, Bridge 81 - Cowlitz River, South of Vader, Washington, undated
- ItemBB028113 - Northern Pacific Engineering Drawing: Detail of Chords/Lateral, Bridge 81 - Cowlitz River, South of Vader, Washington, undated
- ItemBB028114 - Northern Pacific Engineering Drawing: Packing Sheet, Bridge 81 - Cowlitz River, South of Vader, Washington, undated
- ItemBB028115 - Northern Pacific Engineering Drawing: Floor Beam Detail, Bridge 81 - Cowlitz River, South of Vader, Washington, undated
- ItemBB028116 - Northern Pacific Engineering Drawing: Stringer Detail, Bridge 81 - Cowlitz River, South of Vader, Washington, undated
- 1360 more...