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
- 2275 more...
- ItemBB016721 - Northern Pacific Engineering Drawing: Replace Top Gusset Plate, Bridge 26 - Power Tail Race, South of Auburn, Washington, undated
- ItemBB016722 - Northern Pacific Engineering Drawing: Shop Plan - Deck Plate Girder (DPG), Bridge 26 - Power Tail Race, South of Auburn, Washington, undated
- ItemBB016723 - Northern Pacific Engineering Drawing: Shop Plan - Deck Plate Girder (DPG), Bridge 26 - Power Tail Race, South of Auburn, Washington, undated
- ItemBB016724 - Northern Pacific Engineering Drawing: Shop Plan - Arrangement for Girder, Bridge 26 - Power Tail Race, South of Auburn, Washington, undated
- ItemBB016725 - Northern Pacific Engineering Drawing: Shop Plan - Cast Iron Base, Bridge 26 - Power Tail Race, South of Auburn, Washington, undated
- ItemBB016730 - Northern Pacific Engineering Drawing: General Plan/Elevation/Map, Bridge 62.1 - Spokane River, West of Trentwood, Washington, 1911
- ItemBB016731 - Northern Pacific Engineering Drawing: Masonry Detail, Bridge 62.1 - Spokane River, West of Trentwood, Washington, 1911
- ItemBB016732 - Northern Pacific Engineering Drawing: Stress Sheet Viaduct, Bridge 62.1 - Spokane River, West of Trentwood, Washington, undated
- ItemBB016733 - Northern Pacific Engineering Drawing: Plan of East Abutment, Bridge 62.1 - Spokane River, West of Trentwood, Washington, undated
- 5444 more...