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
- 3695 more...
- ItemBB018298 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 51 - Hell Gate River, West of Garrison, Montana, 1952
- ItemBB018299 - Northern Pacific Engineering Drawing: Shop Plan - Through Plate Girder Spans, Bridge 51 - Hell Gate River, West of Garrison, Montana, undated
- ItemBB018300 - Northern Pacific Engineering Drawing: Shop Plan - Girders, Bridge 51 - Hell Gate River, West of Garrison, Montana, undated
- ItemBB018301 - Northern Pacific Engineering Drawing: Shop Plan - Girders, Bridge 51 - Hell Gate River, West of Garrison, Montana, undated
- ItemBB018302 - Northern Pacific Engineering Drawing: Shop Plan - Floor Beam, Bridge 51 - Hell Gate River, West of Garrison, Montana, undated
- ItemBB018303 - Northern Pacific Engineering Drawing: Shop Plan - Stringer, etc., Bridge 51 - Hell Gate River, West of Garrison, Montana, undated
- ItemBB018304 - Northern Pacific Engineering Drawing: Shop Plan - Bearing, Bridge 51 - Hell Gate River, West of Garrison, Montana, undated
- ItemBB018305 - Northern Pacific Engineering Drawing: Shop Plan - Girder/Lateral, Bridge 51 - Hell Gate River, West of Garrison, Montana, undated
- ItemBB018306 - Northern Pacific Engineering Drawing: Shop Plan - Girder/Lateral, Bridge 51 - Hell Gate River, West of Garrison, Montana, undated
- 4024 more...