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
- 5335 more...
- ItemBB020430 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 124 - Underpass, South of Ridgefield, Washington, undated
- ItemBB020431 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 124 - Underpass, South of Ridgefield, Washington, undated
- ItemBB020432 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 124 - Underpass, South of Ridgefield, Washington, undated
- ItemBB020433 - Northern Pacific Engineering Drawing: Proposed Repairs - Piers, Bridge 124 - Underpass, South of Ridgefield, Washington, 1947
- ItemBB020434 - Northern Pacific Engineering Drawing: Parapet Raise, Bridge 124 - Underpass, South of Ridgefield, Washington, 1947
- ItemBB020436 - Northern Pacific Engineering Drawing: Shop Plan - 35 Foot Girder, Bridge 124 - Underpass, South of Ridgefield, Washington, undated
- ItemBB020437 - Northern Pacific Engineering Drawing: Shop Plan - 60 Foot Deck Plate Girder (DPG), Bridge 124 - Underpass, South of Ridgefield, Washington, undated
- ItemBB020438 - Northern Pacific Engineering Drawing: Shop Plan - Cross Frame and Laterals, Bridge 124 - Underpass, South of Ridgefield, Washington, undated
- ItemBB020439 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Laterals, Bridge 124 - Underpass, South of Ridgefield, Washington, undated
- 2384 more...