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
- 4123 more...
- ItemBB018755 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 47 - Skookumchuck River, South of Bucoda, Washington, 1921
- ItemBB018756 - Northern Pacific Engineering Drawing: Shop Plan - Erection Diagram, Bridge 47 - Skookumchuck River, South of Bucoda, Washington, undated
- ItemBB018757 - Northern Pacific Engineering Drawing: Shop Plan - Trusses, Bridge 47 - Skookumchuck River, South of Bucoda, Washington, undated
- ItemBB018758 - Northern Pacific Engineering Drawing: Shop Plan - Vertical, Bridge 47 - Skookumchuck River, South of Bucoda, Washington, undated
- ItemBB018759 - Northern Pacific Engineering Drawing: Shop Plan - Floor Beams, Bridge 47 - Skookumchuck River, South of Bucoda, Washington, undated
- ItemBB018760 - Northern Pacific Engineering Drawing: Shop Plan - Stringers, Bridge 47 - Skookumchuck River, South of Bucoda, Washington, undated
- ItemBB018761 - Northern Pacific Engineering Drawing: Shop Plan - Portal, etc., Bridge 47 - Skookumchuck River, South of Bucoda, Washington, undated
- ItemBB018762 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Lateral, Bridge 47 - Skookumchuck River, South of Bucoda, Washington, undated
- ItemBB018763 - Northern Pacific Engineering Drawing: Bill of Materials, Bridge 47 - Skookumchuck River, South of Bucoda, Washington, undated
- 3596 more...