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
- 4041 more...
- ItemBB018671 - Northern Pacific Engineering Drawing: Shop Plan - Bill of Material, Bridge 100 (133) - Coweman River, South of Kelso, Washington, undated
- ItemBB018672 - Northern Pacific Engineering Drawing: Shop Plan - Bill of Material, Bridge 100 (133) - Coweman River, South of Kelso, Washington, undated
- ItemBB018673 - Northern Pacific Engineering Drawing: Shop Plan - Bill of Material, Bridge 100 (133) - Coweman River, South of Kelso, Washington, undated
- ItemBB018674 - Northern Pacific Engineering Drawing: Shop Plan - Bill of Material, Bridge 100 (133) - Coweman River, South of Kelso, Washington, undated
- ItemBB018676 - Northern Pacific Engineering Drawing: Bent Details, Bridge 3 - Alderway Street, Tacoma, Washington, undated
- ItemBB018677 - Northern Pacific Engineering Drawing: Plan/Detail North Abutment, Bridge 128 - Salmon Creek, South of Ridgefield, Washington, 1907
- ItemBB018678 - Northern Pacific Engineering Drawing: Detail South Abutment/Pier, Bridge 128 - Salmon Creek, South of Ridgefield, Washington, undated
- ItemBB018679 - Northern Pacific Engineering Drawing: Pier/Abutment Plate 7, Bridge 128 - Salmon Creek, South of Ridgefield, Washington, undated
- ItemBB018681 - Northern Pacific Engineering Drawing: Deck Plan, Bridge 128 - Salmon Creek, South of Ridgefield, Washington, undated
- 3678 more...