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
- 5941 more...
- ItemBB025599 - Northern Pacific Engineering Drawing: Pier Tops, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025600 - Northern Pacific Engineering Drawing: Pier Tops, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025601 - Northern Pacific Engineering Drawing: West Abutment 12, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025602 - Northern Pacific Engineering Drawing: Tower General Views, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025603 - Northern Pacific Engineering Drawing: Towers Bottom Section, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025604 - Northern Pacific Engineering Drawing: Towers at Struts, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025605 - Northern Pacific Engineering Drawing: Towers - Upper Section, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025606 - Northern Pacific Engineering Drawing: Towers - Upper Section, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025607 - Northern Pacific Engineering Drawing: Counterweight Span Column, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- 1778 more...