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
- 1619 more...
- 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
- ItemBB016060 - Northern Pacific Engineering Drawing: Fixed End/Expansion Bearings, Bridge 100 (133) - Coweman River, South of Kelso, Washington, undated
- ItemBB016061 - Northern Pacific Engineering Drawing: General Plan/Detail Masonry, Bridge 59 - Newaukum River, South of Chehalis Junction, Washington, 1899
- ItemBB016062 - Northern Pacific Engineering Drawing: Detail of Pier/Abutment, Bridge 59 - Newaukum River, South of Chehalis Junction, Washington, undated
- 6100 more...