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
- 1307 more...
- 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
- ItemBB015641 - Northern Pacific Engineering Drawing: Deck Plan, Bridge 46 - Cloquallum River, West of Oakville, Washington, undated
- ItemBB015642 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 46 - Cloquallum River, West of Oakville, Washington, 1927
- ItemBB015643 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 46 - Cloquallum River, West of Oakville, Washington, undated
- ItemBB015644 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 46 - Cloquallum River, West of Oakville, Washington, 1937
- 6412 more...