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
- 4498 more...
- ItemBB019178 - Northern Pacific Engineering Drawing: 150 Foot Through Truss Spacing, Bridge 22.1 - Nisqually River, South of Roy, Washington, undated
- ItemBB019179 - Northern Pacific Engineering Drawing: Shop Plan - Truss Span, Bridge 22.1 - Nisqually River, South of Roy, Washington, undated
- ItemBB019180 - Northern Pacific Engineering Drawing: Shop Plan - Truss Span, Bridge 22.1 - Nisqually River, South of Roy, Washington, undated
- ItemBB019181 - Northern Pacific Engineering Drawing: Shop Plan - Through Pin, Bridge 22.1 - Nisqually River, South of Roy, Washington, undated
- ItemBB019182 - Northern Pacific Engineering Drawing: Replace Stringer Lateral Plate, Bridge 22.1 - Nisqually River, South of Roy, Washington, undated
- ItemBB019183 - Northern Pacific Engineering Drawing: Reinforcement Span, Bridge 22.1 - Nisqually River, South of Roy, Washington, undated
- ItemBB019184 - Northern Pacific Engineering Drawing: General Plans, Bridge 9 - Des Chutes River, West of Olympia, Washington, 1903
- ItemBB019185 - Northern Pacific Engineering Drawing: Detail of Main Girder, Bridge 9 - Des Chutes River, West of Olympia, Washington, undated
- ItemBB019186 - Northern Pacific Engineering Drawing: Detail Floor Beam/Stringer, Bridge 9 - Des Chutes River, West of Olympia, Washington, undated
- 3221 more...