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
- 3116 more...
- ItemBB017687 - Northern Pacific Engineering Drawing: Proposed Concrete Trestle, Bridge 6A, Silver Bow, Montana, undated
- ItemBB017688 - Northern Pacific Engineering Drawing: Proposed Concrete Trestle, Bridge 6, Silver Bow, Montana, undated
- ItemBB017689 - Northern Pacific Engineering Drawing: Bent and Abutment Details, Bridge 6, Silver Bow, Montana, undated
- ItemBB017690 - Northern Pacific Engineering Drawing: General Plan, Bridge 9 - Jefferson River, South of Renova, Montana, 1948
- ItemBB017691 - Northern Pacific Engineering Drawing: Timber Pier Details, Bridge 9 - Jefferson River, South of Renova, Montana, undated
- ItemBB017692 - Northern Pacific Engineering Drawing: Remodel Steel Details, Bridge 9 - Jefferson River, South of Renova, Montana, undated
- ItemBB017693 - Northern Pacific Engineering Drawing: Remodel Steel Details, Bridge 9 - Jefferson River, South of Renova, Montana, undated
- ItemBB017694 - Northern Pacific Engineering Drawing: Remodel Steel Details, Bridge 9 - Jefferson River, South of Renova, Montana, undated
- ItemBB017695 - Northern Pacific Engineering Drawing: Bottom Chord, Bridge 9 - Jefferson River, South of Renova, Montana, undated
- 4603 more...