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
- 704 more...
- ItemBB014974 - Northern Pacific Engineering Drawing: Shop Plan - Truss Span, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014975 - Northern Pacific Engineering Drawing: Shop Plan - Posts, etc., Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014976 - Northern Pacific Engineering Drawing: Shop Plan - Floor Beams, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014977 - Northern Pacific Engineering Drawing: Shop Plan - Diagonal/Posts, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014978 - Northern Pacific Engineering Drawing: Shop Plan - Floor Beam/Stringer, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014979 - Northern Pacific Engineering Drawing: Shop Plan - Posts, etc., Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014980 - Northern Pacific Engineering Drawing: Shop Plan - Top Chord, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014981 - Northern Pacific Engineering Drawing: Shop Plan - Stringers, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014982 - Northern Pacific Engineering Drawing: Shop Plan - Stringers, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- 7015 more...