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
- 5165 more...
- ItemBB020086 - Northern Pacific Engineering Drawing: Reinforcement Concrete Trestle, Bridge 156, West of Belgrade, Montana, 1927
- ItemBB020087 - Northern Pacific Engineering Drawing: Shop Plan - Drawbridge, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB020088 - Northern Pacific Engineering Drawing: Shop Plan - Top Chords, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB020089 - Northern Pacific Engineering Drawing: Shop Plan - End Posts, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB020090 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Chords, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB020091 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Chords, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB020092 - Northern Pacific Engineering Drawing: Shop Plan - Stringers, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB020093 - Northern Pacific Engineering Drawing: Shop Plan - Floor Beam and Bill of Material, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB020094 - Northern Pacific Engineering Drawing: Shop Plan - Posts, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- 2554 more...