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
- 5158 more...
- ItemBB020079 - Northern Pacific Engineering Drawing: Shop Plan - Through Plate Girder Span, Bridge 70 - Harrison Avenue, Butte, Montana, undated
- ItemBB020080 - Northern Pacific Engineering Drawing: Proposed Screening, Bridge 70 - Harrison Avenue, Butte, Montana, undated
- ItemBB020081 - Northern Pacific Engineering Drawing: General Plan, Bridge 117 - Highway Under Crossing, West of Bonner, Montana, 1930
- ItemBB020082 - Northern Pacific Engineering Drawing: Details of Abutments, Bridge 117 - Highway Under Crossing, West of Bonner, Montana, undated
- ItemBB020083 - Northern Pacific Engineering Drawing: Solid Timber Deck, Bridge 117 - Highway Under Crossing, West of Bonner, Montana, undated
- ItemBB020084 - Northern Pacific Engineering Drawing: 43 Foot - 8 Inch Girder Beam, Bridge 117 - Highway Under Crossing, West of Bonner, Montana, undated
- ItemBB020085 - Northern Pacific Engineering Drawing: Shop Plan - 43 Foot - 8 Inch, Bridge 117 - Highway Under Crossing, West of Bonner, Montana, undated
- ItemBB020086 - Northern Pacific Engineering Drawing: Reinforcement Concrete Trestle, Bridge 156, West of Belgrade, Montana, 1927
- ItemBB020087 - Northern Pacific Engineering Drawing: Shop Plan - Drawbridge, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- 2561 more...