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
- 5108 more...
- ItemBB020010 - Northern Pacific Engineering Drawing: Bracing/25 Foot I - Beam, Bridge 101, West of Cunningham, Washington, undated
- ItemBB020011 - Northern Pacific Engineering Drawing: 4 Deck Plate Girder (DPG) Spans General Plan, Bridge 170, West of Rivulet, Montana, 1941
- ItemBB020012 - Northern Pacific Engineering Drawing: 4 Deck Plate Girder (DPG) Spans Detail, Bridge 170, West of Rivulet, Montana, undated
- ItemBB020013 - Northern Pacific Engineering Drawing: 4 Deck Plate Girder (DPG) Spans Detail, Bridge 170, West of Rivulet, Montana, undated
- ItemBB020014 - Northern Pacific Engineering Drawing: Reinforcement and Lateral Bracing, Bridge 170, West of Rivulet, Montana, undated
- ItemBB020015 - Northern Pacific Engineering Drawing: Spans 2 and 3, Bridge 170, West of Rivulet, Montana, undated
- ItemBB020016 - Northern Pacific Engineering Drawing: Reinforcement and Lateral Bracing, Bridge 170, West of Rivulet, Montana, undated
- ItemBB020017 - Northern Pacific Engineering Drawing: Masonry/Constructed, Bridge 170, West of Rivulet, Montana, undated
- ItemBB020018 - Northern Pacific Engineering Drawing: Anchor Bolt Set Plan, Bridge 170, West of Rivulet, Montana, undated
- 2611 more...