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
- 3703 more...
- ItemBB018306 - Northern Pacific Engineering Drawing: Shop Plan - Girder/Lateral, Bridge 51 - Hell Gate River, West of Garrison, Montana, undated
- ItemBB018307 - Northern Pacific Engineering Drawing: Shop Plan - Floor Beam/Stringer, Bridge 51 - Hell Gate River, West of Garrison, Montana, undated
- ItemBB018308 - Northern Pacific Engineering Drawing: Shop Plan - Plan/Bearings, Bridge 51 - Hell Gate River, West of Garrison, Montana, undated
- ItemBB018309 - Northern Pacific Engineering Drawing: Shop Plan - Pier/Abutment, Bridge 51 - Hell Gate River, West of Garrison, Montana, undated
- ItemBB018310 - Northern Pacific Engineering Drawing: General Plan, Bridge 9.46 - I-90, South of Wilburton, Washington, 1967
- ItemBB018311 - Northern Pacific Engineering Drawing: Test Holes, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018312 - Northern Pacific Engineering Drawing: Boring Plan, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018313 - Northern Pacific Engineering Drawing: Boring Plan, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018314 - Northern Pacific Engineering Drawing: Abutment/Pier/Bridge Layout, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- 4016 more...