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
- 2752 more...
- ItemBB017238 - Northern Pacific Engineering Drawing: Half Elevation Truss, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017239 - Northern Pacific Engineering Drawing: Existing Bents - Over Pier, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017240 - Northern Pacific Engineering Drawing: Bents Over Piers, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017241 - Northern Pacific Engineering Drawing: Diagram Show Excavation, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017242 - Northern Pacific Engineering Drawing: Repair - Pier, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, 1948
- ItemBB017243 - Northern Pacific Engineering Drawing: Erection Plan and Crosswalks, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017244 - Northern Pacific Engineering Drawing: Ladder and Railing Details, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017245 - Northern Pacific Engineering Drawing: Catwalk Railing Detail, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017246 - Northern Pacific Engineering Drawing: Crosswalks - U2 and U3, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- 4967 more...