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
- 674 more...
- ItemBB014944 - Northern Pacific Engineering Drawing: Shop Plan - Trainman Walk, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014945 - Northern Pacific Engineering Drawing: Shop Plan - Bearing Devices, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014946 - Northern Pacific Engineering Drawing: Shop Plan - Bridge Girders, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014947 - Northern Pacific Engineering Drawing: Shop Plan - Miscellaneous Detail, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014948 - Northern Pacific Engineering Drawing: Shop Plan - Inspection Plank, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014949 - Northern Pacific Engineering Drawing: Shop Plan - Handrail Details, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014950 - Northern Pacific Engineering Drawing: Shop Plan - Bearing Devices, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014951 - Northern Pacific Engineering Drawing: Shop Plan - Bridge Girders, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014952 - Northern Pacific Engineering Drawing: Shop Plan - Bridge Girders, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- 7045 more...