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
- 1297 more...
- ItemBB015625 - Northern Pacific Engineering Drawing: Walk Addition, Bridge 28 - Irrigation Ditch, West of Park City, Montana, undated
- ItemBB015627 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 33.1 - Chehalis Western Railroad, South of Saint Clair, Washington, 1950
- ItemBB015628 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 33.1 - Chehalis Western Railroad, South of Saint Clair, Washington, 1950
- ItemBB015629 - Northern Pacific Engineering Drawing: General Plan, Bridge 33.1 - Chehalis Western Railroad, South of Saint Clair, Washington, 1927
- ItemBB015630 - Northern Pacific Engineering Drawing: Permanent Timber Construction, Bridge 33.1 - Chehalis Western Railroad, South of Saint Clair, Washington, undated
- ItemBB015631 - Northern Pacific Engineering Drawing: Steel Detail/Deck Material, Bridge 33.1 - Chehalis Western Railroad, South of Saint Clair, Washington, undated
- 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
- 6422 more...