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
- 4028 more...
- ItemBB018658 - Northern Pacific Engineering Drawing: Shop Plan - Floor Beam, Bridge 100 (133) - Coweman River, South of Kelso, Washington, undated
- ItemBB018659 - Northern Pacific Engineering Drawing: Shop Plan - Stringer/Bracket, Bridge 100 (133) - Coweman River, South of Kelso, Washington, undated
- ItemBB018660 - Northern Pacific Engineering Drawing: Shop Plan - Diagram, Bridge 100 (133) - Coweman River, South of Kelso, Washington, undated
- ItemBB018661 - Northern Pacific Engineering Drawing: Shop Plan - Laterals, Bridge 100 (133) - Coweman River, South of Kelso, Washington, undated
- ItemBB018662 - Northern Pacific Engineering Drawing: Shop Plan - Posts, Bridge 100 (133) - Coweman River, South of Kelso, Washington, undated
- ItemBB018663 - Northern Pacific Engineering Drawing: Shop Plan - Portal/Strut, Bridge 100 (133) - Coweman River, South of Kelso, Washington, undated
- ItemBB018664 - Northern Pacific Engineering Drawing: Shop Plan - Portal, etc., Bridge 100 (133) - Coweman River, South of Kelso, Washington, undated
- ItemBB018665 - Northern Pacific Engineering Drawing: Shop Plan - Lateral/Strut, Bridge 100 (133) - Coweman River, South of Kelso, Washington, undated
- ItemBB018666 - Northern Pacific Engineering Drawing: Shop Plan - Bottom Chord, Bridge 100 (133) - Coweman River, South of Kelso, Washington, undated
- 3691 more...