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
- 715 more...
- ItemBB014985 - Northern Pacific Engineering Drawing: Shop Plan - Diagonal/Post, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014986 - Northern Pacific Engineering Drawing: Shop Plan - Stringer/Diaphragm, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014987 - Northern Pacific Engineering Drawing: Shop Plan - Telegraph/Handrail, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014988 - Northern Pacific Engineering Drawing: Shop Plan - Handrail Detail, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014989 - Northern Pacific Engineering Drawing: Shop Plan - Grating Detail, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014991 - Northern Pacific Engineering Drawing: General Elevation/Plan, Bridge 50 - Beaver Creek, West of Childs, Montana, 1955
- ItemBB014992 - Northern Pacific Engineering Drawing: Abutments 1 and 4/Log Bore, Bridge 50 - Beaver Creek, West of Childs, Montana, undated
- ItemBB014993 - Northern Pacific Engineering Drawing: Pier 2/3, Bridge 50 - Beaver Creek, West of Childs, Montana, undated
- ItemBB014994 - Northern Pacific Engineering Drawing: Plate Girder Detail, Bridge 50 - Beaver Creek, West of Childs, Montana, undated
- 7004 more...