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
- 5234 more...
- ItemBB020251 - Northern Pacific Engineering Drawing: General Plan - Approach Girder, Bridge 23.1 - Underpass, South of Ketron, Washington, undated
- ItemBB020252 - Northern Pacific Engineering Drawing: General Plan - Approach Girder, Bridge 23.1 - Underpass, South of Ketron, Washington, undated
- ItemBB020253 - Northern Pacific Engineering Drawing: General Plan - Approach Girder, Bridge 23.1 - Underpass, South of Ketron, Washington, undated
- ItemBB020254 - Northern Pacific Engineering Drawing: Girder Bearing Details, Bridge 23.1 - Underpass, South of Ketron, Washington, undated
- ItemBB020255 - Northern Pacific Engineering Drawing: Girder Bearing Details, Bridge 23.1 - Underpass, South of Ketron, Washington, undated
- ItemBB020256 - Northern Pacific Engineering Drawing: Deck Drainage, Bridge 23.1 - Underpass, South of Ketron, Washington, undated
- ItemBB020257 - Northern Pacific Engineering Drawing: Girder Bearing Layout, Bridge 23.1 - Underpass, South of Ketron, Washington, undated
- ItemBB020258 - Northern Pacific Engineering Drawing: Shop Plan - General Plan, Bridge 23.1 - Underpass, South of Ketron, Washington, undated
- ItemBB020259 - Northern Pacific Engineering Drawing: Shop Plan - General Plan, Bridge 23.1 - Underpass, South of Ketron, Washington, undated
- 2485 more...