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 3007 - Track
- 130 more...
- ItemBB029259 - Northern Pacific Engineering Drawing: Reinforcement Concrete Box, Culvert (Standard Plan), Washington, undated
- ItemBB029260 - Northern Pacific Engineering Drawing: Reinforcement Concrete Box, Culvert (Standard Plan), Washington, undated
- ItemBB029261 - Northern Pacific Engineering Drawing: Reinforcement Concrete Box, Culvert (Standard Plan), Washington, undated
- ItemBB030736 - Northern Pacific Engineering Drawing: Fill - 10 Foot X 12 Foot Pier, Culvert (Old Number 99), Near Kelso, Washington, undated
- ItemBB030737 - Northern Pacific Engineering Drawing: Shop Plan - Precast Concrete, Culvert (Old Number 99), Near Kelso, Washington, undated
- ItemBB030738 - Northern Pacific Engineering Drawing: Shop Plan - Precast Concrete, Culvert (Old Number 99), Near Kelso, Washington, undated
- ItemBB031049 - Northern Pacific Engineering Drawing: Standard Plan Foundation, Track Scale, Prineville, Oregon, undated
- ItemBB031050 - Northern Pacific Engineering Drawing: Specification Plan Foundation, Track Scale, Prineville, Oregon, undated
- ItemBB031051 - Northern Pacific Engineering Drawing: Detail - Steel Tie and Fasteners, Track Scale, Prineville, Oregon, undated
- 189 more...