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
- 7200 more...
- ItemBB029280 - Northern Pacific Engineering Drawing: Shop Plan - Lower Chord, Bridge 207 - Clark Fork River, West of Donlan, Montana, undated
- ItemBB029281 - Northern Pacific Engineering Drawing: Shop Plan - Lower Chord, Bridge 207 - Clark Fork River, West of Donlan, Montana, undated
- ItemBB029282 - Northern Pacific Engineering Drawing: Shop Plan - End Post, Bridge 207 - Clark Fork River, West of Donlan, Montana, undated
- ItemBB029283 - Northern Pacific Engineering Drawing: Shop Plan - Internal Post, Bridge 207 - Clark Fork River, West of Donlan, Montana, undated
- ItemBB029284 - Northern Pacific Engineering Drawing: Shop Plan - End Post, Bridge 207 - Clark Fork River, West of Donlan, Montana, undated
- ItemBB029285 - Northern Pacific Engineering Drawing: Shop Plan - Diagonal, Bridge 207 - Clark Fork River, West of Donlan, Montana, undated
- ItemBB029286 - Northern Pacific Engineering Drawing: Shop Plan - Diagonal, Bridge 207 - Clark Fork River, West of Donlan, Montana, undated
- ItemBB029287 - Northern Pacific Engineering Drawing: Shop Plan - Diagonal, Bridge 207 - Clark Fork River, West of Donlan, Montana, undated
- ItemBB029288 - Northern Pacific Engineering Drawing: Shop Plan - Diagonal, Bridge 207 - Clark Fork River, West of Donlan, Montana, undated
- 519 more...