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
- 1616 more...
- ItemBB016050 - Northern Pacific Engineering Drawing: General Plan, Bridge 100 (133) - Coweman River, South of Kelso, Washington, 1899
- ItemBB016051 - Northern Pacific Engineering Drawing: Abutments, Bridge 100 (133) - Coweman River, South of Kelso, Washington, undated
- ItemBB016052 - Northern Pacific Engineering Drawing: Masonry Plan, Bridge 100 (133) - Coweman River, South of Kelso, Washington, undated
- ItemBB016053 - Northern Pacific Engineering Drawing: Elevation Near Truss, Bridge 100 (133) - Coweman River, South of Kelso, Washington, undated
- ItemBB016055 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 100 (133) - Coweman River, South of Kelso, Washington, 1965
- ItemBB016056 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 100 (133) - Coweman River, South of Kelso, Washington, 1945
- ItemBB016057 - Northern Pacific Engineering Drawing: Detail of Stringer/Lateral, Bridge 100 (133) - Coweman River, South of Kelso, Washington, undated
- ItemBB016058 - Northern Pacific Engineering Drawing: Floor Beam/Portal, Bridge 100 (133) - Coweman River, South of Kelso, Washington, undated
- ItemBB016059 - Northern Pacific Engineering Drawing: General Plan, Bridge 100 (133) - Coweman River, South of Kelso, Washington, 1910
- 6103 more...