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
- 2267 more...
- ItemBB016712 - Northern Pacific Engineering Drawing: Shop Plan - Girders, Bridge 59.1 - Hell Gate River, West of Phosphate, Montana, undated
- ItemBB016713 - Northern Pacific Engineering Drawing: Shop Plan - Girders, Bridge 59.1 - Hell Gate River, West of Phosphate, Montana, undated
- ItemBB016714 - Northern Pacific Engineering Drawing: Shop Plan - Floor Beam, etc., Bridge 59.1 - Hell Gate River, West of Phosphate, Montana, undated
- ItemBB016715 - Northern Pacific Engineering Drawing: Shop Plan - Bearing/General, Bridge 59.1 - Hell Gate River, West of Phosphate, Montana, undated
- ItemBB016717 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 26 - Power Tail Race, South of Auburn, Washington, 1942
- ItemBB016718 - Northern Pacific Engineering Drawing: Tie Dapping Plan, Bridge 26 - Power Tail Race, South of Auburn, Washington, undated
- ItemBB016719 - Northern Pacific Engineering Drawing: Existing Condition, Bridge 26 - Power Tail Race, South of Auburn, Washington, 1923
- ItemBB016720 - Northern Pacific Engineering Drawing: Replace Gusset Plate/Angle, Bridge 26 - Power Tail Race, South of Auburn, Washington, undated
- ItemBB016721 - Northern Pacific Engineering Drawing: Replace Top Gusset Plate, Bridge 26 - Power Tail Race, South of Auburn, Washington, undated
- 5452 more...