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
- 7468 more...
- ItemBB034225 - Northern Pacific Engineering Drawing: 156 Foot Truss Span Sheet, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034226 - Northern Pacific Engineering Drawing: Substructure Plans, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB034227 - Northern Pacific Engineering Drawing: Project Plan and Elevation, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, 1968
- ItemBB034228 - Northern Pacific Engineering Drawing: Lift Span and Elevation, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, 1968
- ItemBB034229 - Northern Pacific Engineering Drawing: New Pier 5, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, 1968
- ItemBB034230 - Northern Pacific Engineering Drawing: New Pier 6, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, 1968
- ItemBB034231 - Northern Pacific Engineering Drawing: Miscellaneous Pier Detail, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, 1968
- ItemBB034232 - Northern Pacific Engineering Drawing: Boring Logs, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, 1968
- ItemBB034233 - Northern Pacific Engineering Drawing: Boring Logs, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, 1968
- 251 more...