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
- 3689 more...
- ItemBB018292 - Northern Pacific Engineering Drawing: Masonry as Constructed, Bridge 51 - Hell Gate River, West of Garrison, Montana, 1909
- ItemBB018293 - Northern Pacific Engineering Drawing: New Masonry, Bridge 51 - Hell Gate River, West of Garrison, Montana, undated
- ItemBB018294 - Northern Pacific Engineering Drawing: Deck Plan, Bridge 51 - Hell Gate River, West of Garrison, Montana, undated
- ItemBB018295 - Northern Pacific Engineering Drawing: Tie Detail/Bill of Material, Bridge 51 - Hell Gate River, West of Garrison, Montana, undated
- ItemBB018296 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 51 - Hell Gate River, West of Garrison, Montana, 1952
- ItemBB018297 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 51 - Hell Gate River, West of Garrison, Montana, 1952
- 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
- 4030 more...