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
- 113 more...
- ItemBB014334 - Northern Pacific Engineering Drawing: Concrete Repair East Abutment, Bridge 31 - Jocko River, West of Ravalli, Montana, undated
- ItemBB014335 - Northern Pacific Engineering Drawing: Repair East Abutment/Pier 2, Bridge 31 - Jocko River, West of Ravalli, Montana, undated
- ItemBB014336 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 31 - Jocko River, West of Ravalli, Montana, 1958
- ItemBB014337 - Northern Pacific Engineering Drawing: Walk Plan, Bridge 31 - Jocko River, West of Ravalli, Montana, undated
- ItemBB014338 - Northern Pacific Engineering Drawing: General Plan/Masonry Foundation, Bridge 35 - Jocko River, West of Ravalli, Montana, 1899
- ItemBB014339 - Northern Pacific Engineering Drawing: Plan/Detail Pier/Abutment, Bridge 35 - Jocko River, West of Ravalli, Montana, undated
- ItemBB014340 - Northern Pacific Engineering Drawing: Detail of Pier/Abutment, Bridge 35 - Jocko River, West of Ravalli, Montana, undated
- ItemBB014341 - Northern Pacific Engineering Drawing: Deck Plan, Bridge 35 - Jocko River, West of Ravalli, Montana, undated
- ItemBB014342 - Northern Pacific Engineering Drawing: Walk Plan, Bridge 35 - Jocko River, West of Ravalli, Montana, undated
- 7606 more...