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
- 645 more...
- ItemBB014915 - Northern Pacific Engineering Drawing: Shop Plan - Cross Frame, Bridge 51 - Highway, West of Childs, Montana, undated
- ItemBB014916 - Northern Pacific Engineering Drawing: Shop Plan - Top Lateral, Bridge 51 - Highway, West of Childs, Montana, undated
- ItemBB014917 - Northern Pacific Engineering Drawing: Noxon Rapid Line Change, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014918 - Northern Pacific Engineering Drawing: General Plan/Elevation, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014919 - Northern Pacific Engineering Drawing: Abutment 1/Log Borings, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014920 - Northern Pacific Engineering Drawing: Cofferdam Section/Base, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014921 - Northern Pacific Engineering Drawing: Pier 3/4 Shaft 2, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014922 - Northern Pacific Engineering Drawing: Piers 2/5, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- ItemBB014923 - Northern Pacific Engineering Drawing: Abutment 6, Bridge 57 - Clark Fork River, Trout Creek, Montana, undated
- 7074 more...