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
- 1556 more...
- ItemBB015963 - Northern Pacific Engineering Drawing: Shop Plan - Top Posts, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB015964 - Northern Pacific Engineering Drawing: Shop Plan - Post, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB015965 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Chord, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB015966 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Chord, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB015967 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Chord, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB015968 - Northern Pacific Engineering Drawing: Shop Plan - Diagonals, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB015969 - Northern Pacific Engineering Drawing: Shop Plan - Diagonals, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB015970 - Northern Pacific Engineering Drawing: Shop Plan - Diagonals, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB015971 - Northern Pacific Engineering Drawing: Shop Plan - Top Chord, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- 6163 more...