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
- 126 more...
- ItemBB014347 - Northern Pacific Engineering Drawing: Plan/Detail Pier/Abutment, Bridge 36 - Jocko River, West of Ravalli, Montana, undated
- ItemBB014348 - Northern Pacific Engineering Drawing: Deck Plan, Bridge 36 - Jocko River, West of Ravalli, Montana, undated
- ItemBB014349 - Northern Pacific Engineering Drawing: Walk Plan, Bridge 36 - Jocko River, West of Ravalli, Montana, undated
- ItemBB014350 - Northern Pacific Engineering Drawing: Reinforcement/Girder Span, Bridge 36 - Jocko River, West of Ravalli, Montana, undated
- ItemBB014351 - Northern Pacific Engineering Drawing: Reinforce Through Plate Girder, Bridge 36 - Jocko River, West of Ravalli, Montana, undated
- ItemBB014352 - Northern Pacific Engineering Drawing: General Plan/Detail Piers, Bridge 94.1 (303) - Lightning Creek, West of Eddy, Montana, 1907
- ItemBB014353 - Northern Pacific Engineering Drawing: Detail of Abutments, Bridge 94.1 (303) - Lightning Creek, West of Eddy, Montana, undated
- ItemBB014354 - Northern Pacific Engineering Drawing: Piers/Abutments, Bridge 79 (12) - Big Boulder River, West of Greycliff, Montana, undated
- ItemBB014355 - Northern Pacific Engineering Drawing: Floor Beam/Stringers, Bridge 94.1 (303) - Lightning Creek, West of Eddy, Montana, undated
- 7593 more...