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
- 1540 more...
- ItemBB015947 - Northern Pacific Engineering Drawing: Shop Plan - Air Buffer, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB015948 - Northern Pacific Engineering Drawing: Shop Plan - Auxiliary Brake, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB015949 - Northern Pacific Engineering Drawing: Shop Plan - Transverse Detail, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB015950 - Northern Pacific Engineering Drawing: Shop Plan - Frame Lock Line, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB015951 - Northern Pacific Engineering Drawing: Shop Plan - Shaft/Bearings, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB015952 - Northern Pacific Engineering Drawing: Shop Plan - Sway Brace, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB015953 - Northern Pacific Engineering Drawing: Shop Plan - Struts, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB015954 - Northern Pacific Engineering Drawing: Shop Plan - Strut/Brace, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB015955 - Northern Pacific Engineering Drawing: Shop Plan - Strut/Brace, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- 6179 more...