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
- 2313 more...
- ItemBB016763 - Northern Pacific Engineering Drawing: Shop Plan - Draw Span, Bridge 38 - Snohomish River, South of Snohomish, Washington, undated
- ItemBB016764 - Northern Pacific Engineering Drawing: Draw Span, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB016765 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB016766 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, 1950
- ItemBB016767 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, 1950
- ItemBB016768 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, 1945
- ItemBB016769 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, 1941
- ItemBB016770 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, 1941
- ItemBB016771 - Northern Pacific Engineering Drawing: Steel Ties Pier 2, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- 5406 more...