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
- 1303 more...
- ItemBB015632 - Northern Pacific Engineering Drawing: Falsework, Bridge 33.1 - Chehalis Western Railroad, South of Saint Clair, Washington, 1927
- ItemBB015633 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 32 - Skookumchuck Rr, South of Wetico, Washington, 1946
- ItemBB015634 - Northern Pacific Engineering Drawing: General Plan, Bridge 32 - Skookumchuck Rr, South of Wetico, Washington, undated
- ItemBB015635 - Northern Pacific Engineering Drawing: Steel Detail/Deck Material, Bridge 32 - Skookumchuck Rr, South of Wetico, Washington, undated
- ItemBB015636 - Northern Pacific Engineering Drawing: Falsework, Bridge 32 - Skookumchuck Rr, South of Wetico, Washington, 1927
- ItemBB015637 - Northern Pacific Engineering Drawing: Permanent Timber Construction, Bridge 32 - Skookumchuck Rr, South of Wetico, Washington, undated
- ItemBB015638 - Northern Pacific Engineering Drawing: Arrangement and Details, Bridge 32 - Skookumchuck Rr, South of Wetico, Washington, undated
- ItemBB015639 - Northern Pacific Engineering Drawing: General/Masonry Plans, Bridge 46 - Cloquallum River, West of Oakville, Washington, undated
- ItemBB015640 - Northern Pacific Engineering Drawing: Masonry Plan, Bridge 46 - Cloquallum River, West of Oakville, Washington, 1920
- 6416 more...