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
- 162 more...
- ItemBB014383 - Northern Pacific Engineering Drawing: Reinforce Floor Beams, Bridge 55 - Flathead River, West of Perma, Montana, undated
- ItemBB014384 - Northern Pacific Engineering Drawing: Detail of Placement Side Plate, Bridge 55 - Flathead River, West of Perma, Montana, undated
- ItemBB014385 - Northern Pacific Engineering Drawing: Detail of Brackets, Bridge 55 - Flathead River, West of Perma, Montana, undated
- ItemBB014386 - Northern Pacific Engineering Drawing: Telegraph Supports, Bridge 55 - Flathead River, West of Perma, Montana, undated
- ItemBB014387 - Northern Pacific Engineering Drawing: General Plan, Bridge 22 - Jocko River, West of Evaro, Montana, 1900
- ItemBB014388 - Northern Pacific Engineering Drawing: General Plan, Bridge 22 - Jocko River, West of Evaro, Montana, 1900
- ItemBB014389 - Northern Pacific Engineering Drawing: Abutments, Bridge 22 - Jocko River, West of Evaro, Montana, undated
- ItemBB014390 - Northern Pacific Engineering Drawing: Abutments, Bridge 22 - Jocko River, West of Evaro, Montana, undated
- ItemBB014391 - Northern Pacific Engineering Drawing: Piers, Bridge 22 - Jocko River, West of Evaro, Montana, undated
- 7557 more...