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
- 339 more...
- ItemBB014579 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 7.1 - Van Sycle Creek, South of Zangar Junction, Washington, undated
- ItemBB014580 - Northern Pacific Engineering Drawing: Shop Plan - Cast Iron Bed Plate, Bridge 6 - Chehalis River, Milburn, Washington, undated
- ItemBB014581 - Northern Pacific Engineering Drawing: Concrete Shim/Raise, Bridge 43 - Little Blackfoot Creek, West of Bradley, Montana, undated
- ItemBB014582 - Northern Pacific Engineering Drawing: Concrete Shims, Bridge 43 - Little Blackfoot Creek, West of Bradley, Montana, undated
- ItemBB014584 - Northern Pacific Engineering Drawing: Walk Details, Bridge 43 - Little Blackfoot Creek, West of Bradley, Montana, undated
- ItemBB014585 - Northern Pacific Engineering Drawing: General Plans, Bridge 168 (24), West of Rivulet, Montana, 1901
- ItemBB014586 - Northern Pacific Engineering Drawing: Study Bridge/Track Layout, Bridge 168 (24), West of Rivulet, Montana, undated
- ItemBB014587 - Northern Pacific Engineering Drawing: General Plan Superstructure, Bridge 168 (24), West of Rivulet, Montana, undated
- ItemBB014588 - Northern Pacific Engineering Drawing: Abutment Seat Remodel, Bridge 168 (24), West of Rivulet, Montana, undated
- 7380 more...