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
- 7538 more...
- ItemBB034295 - Northern Pacific Engineering Drawing: Shop Plan - Steel Details, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034296 - Northern Pacific Engineering Drawing: Shop Plan - Floor Bracing, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034297 - Northern Pacific Engineering Drawing: Shop Plan - Steel Detail/70, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034298 - Northern Pacific Engineering Drawing: Shop Plan - Stringer and Floor Frame, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034299 - Northern Pacific Engineering Drawing: Shop Plan - Stringer and Floor Frame, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034300 - Northern Pacific Engineering Drawing: Shop Plan - Stringer and Floor Frame, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034301 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Chord, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034302 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Chord, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034303 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Chord, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- 181 more...