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
- 479 more...
- ItemBB014728 - Northern Pacific Engineering Drawing: Foundation Plan Deck Girder Span, Bridge 58 - Palouse River, West of Perma, Washington, undated
- ItemBB014729 - Northern Pacific Engineering Drawing: Superstructure, Bridge 58 - Palouse River, West of Perma, Washington, undated
- ItemBB014730 - Northern Pacific Engineering Drawing: General Plan/Miscellaneous Detail, Bridge 182, West of Westfall, Montana, 1949
- ItemBB014731 - Northern Pacific Engineering Drawing: Detail of Steel Bent, Bridge 182, West of Westfall, Montana, undated
- ItemBB014732 - Northern Pacific Engineering Drawing: New Foundations, Bridge 182, West of Westfall, Montana, undated
- ItemBB014733 - Northern Pacific Engineering Drawing: Falsework Building Piers, Bridge 182, West of Westfall, Montana, undated
- ItemBB014734 - Northern Pacific Engineering Drawing: Detail Piers Abutments, Bridge 182, West of Westfall, Montana, undated
- ItemBB014735 - Northern Pacific Engineering Drawing: Typical Tower Details, Bridge 182, West of Westfall, Montana, undated
- ItemBB014736 - Northern Pacific Engineering Drawing: Details of 60 Foot Girder, Bridge 182, West of Westfall, Montana, undated
- 7240 more...