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
- 3193 more...
- ItemBB017771 - Northern Pacific Engineering Drawing: Concrete Abutment, Bridge 41, Washington, undated
- ItemBB017772 - Northern Pacific Engineering Drawing: 25 Foot Girder Beam Span - Sketch, Bridge 41, Washington, undated
- ItemBB017773 - Northern Pacific Engineering Drawing: Shop Plan - 25 Foot Girder, Bridge 41, Washington, undated
- ItemBB017774 - Northern Pacific Engineering Drawing: Detail Angle A1, Bridge 41, Washington, undated
- ItemBB017775 - Northern Pacific Engineering Drawing: Cut List of Bars, Bridge 41, Washington, undated
- ItemBB017776 - Northern Pacific Engineering Drawing: Trestle Bridge, Bridge 11.1 - Mercer Slough, South of Wilburton, Washington, undated
- ItemBB017777 - Northern Pacific Engineering Drawing: Trestle Bridge, Bridge 11.1 - Mercer Slough, South of Wilburton, Washington, undated
- ItemBB017778 - Northern Pacific Engineering Drawing: Rearrangement Bents, Bridge 11.1 - Mercer Slough, South of Wilburton, Washington, undated
- ItemBB017779 - Northern Pacific Engineering Drawing: General Plan - Bent Details, Bridge 11.1 - Mercer Slough, South of Wilburton, Washington, undated
- 4526 more...