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
- 4419 more...
- ItemBB019099 - Northern Pacific Engineering Drawing: Telegraph Support, Bridge 25 - Nisqually River, South of Nisqually, Washington, undated
- ItemBB019100 - Northern Pacific Engineering Drawing: Masonry Plan, Bridge 36 - Deschutes River, South of East Olympia, Washington, 1912
- ItemBB019101 - Northern Pacific Engineering Drawing: Stress Sheet, Bridge 36 - Deschutes River, South of East Olympia, Washington, undated
- ItemBB019102 - Northern Pacific Engineering Drawing: Detail of Truss, Bridge 36 - Deschutes River, South of East Olympia, Washington, undated
- ItemBB019103 - Northern Pacific Engineering Drawing: Detail of Truss, Bridge 36 - Deschutes River, South of East Olympia, Washington, undated
- ItemBB019104 - Northern Pacific Engineering Drawing: Detail of Bearing, Bridge 36 - Deschutes River, South of East Olympia, Washington, undated
- ItemBB019105 - Northern Pacific Engineering Drawing: Shop Plan - Bill of Material, Bridge 39 - Umatilla River, Union Pacific Connection, Washington, undated
- ItemBB019106 - Northern Pacific Engineering Drawing: Shop Plan - Bill of Material, Bridge 39 - Umatilla River, Union Pacific Connection, Washington, undated
- ItemBB019107 - Northern Pacific Engineering Drawing: Shop Plan - Through Truss Spacing, Bridge 39 - Umatilla River, Union Pacific Connection, Washington, undated
- 3300 more...