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
- 2003 more...
- ItemBB016443 - Northern Pacific Engineering Drawing: Centerline of Strut/Posts, Bridge 207 - Clark Fork River, West of Donlan, Montana, undated
- ItemBB016444 - Northern Pacific Engineering Drawing: Detail of Expansion Stringer, Bridge 207 - Clark Fork River, West of Donlan, Montana, undated
- ItemBB016445 - Northern Pacific Engineering Drawing: Repair to Bearing Seat, Bridge 207 - Clark Fork River, West of Donlan, Montana, undated
- ItemBB016446 - Northern Pacific Engineering Drawing: Repair to Bearing Seat, Bridge 207 - Clark Fork River, West of Donlan, Montana, undated
- ItemBB016447 - Northern Pacific Engineering Drawing: New End Floor Beam Approach, Bridge 207 - Clark Fork River, West of Donlan, Montana, undated
- ItemBB016448 - Northern Pacific Engineering Drawing: Alter Expansion End Stringer, Bridge 207 - Clark Fork River, West of Donlan, Montana, undated
- ItemBB016449 - Northern Pacific Engineering Drawing: Repair to Lateral System, Bridge 207 - Clark Fork River, West of Donlan, Montana, undated
- ItemBB016450 - Northern Pacific Engineering Drawing: Broken Angles, Bridge 207 - Clark Fork River, West of Donlan, Montana, undated
- ItemBB016451 - Northern Pacific Engineering Drawing: Truss Modification/Repairs, Bridge 207 - Clark Fork River, West of Donlan, Montana, undated
- 5716 more...