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
- 2758 more...
- 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
- ItemBB017248 - Northern Pacific Engineering Drawing: Deck and Shim Details, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017249 - Northern Pacific Engineering Drawing: Tie Details and Bill of Materials, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017250 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017251 - Northern Pacific Engineering Drawing: Standard 50 Foot Deck Plate Girder (DPG), Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017252 - Northern Pacific Engineering Drawing: Erection Diagram, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017253 - Northern Pacific Engineering Drawing: Girders, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- 4961 more...