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
- 2745 more...
- ItemBB017231 - Northern Pacific Engineering Drawing: Structural Steel Bearings, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017232 - Northern Pacific Engineering Drawing: Conn - Existing Bent, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017233 - Northern Pacific Engineering Drawing: General Plan - Erection Purlin, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017234 - Northern Pacific Engineering Drawing: Details, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017235 - Northern Pacific Engineering Drawing: Rearrangement - Bracing, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, 1947
- ItemBB017236 - Northern Pacific Engineering Drawing: Details, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017237 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- 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
- 4974 more...