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
- 1386 more...
- ItemBB015717 - Northern Pacific Engineering Drawing: Safety Bridge Across Highway, Bridge 134 (169), West of Chestnut, Montana, undated
- ItemBB015718 - Northern Pacific Engineering Drawing: Safety Bridge Across Highway, Bridge 134 (169), West of Chestnut, Montana, undated
- ItemBB015719 - Northern Pacific Engineering Drawing: General Plan/Detail, Bridge 54 - Shippy Creek, West of Perma, Montana, 1926
- ItemBB015720 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 58 - Palouse River, West of Perma, Washington, 1947
- ItemBB015722 - Northern Pacific Engineering Drawing: Replace Span With Girder, Bridge 58 - Palouse River, West of Perma, Washington, undated
- ItemBB015723 - Northern Pacific Engineering Drawing: Shop Plan - Girder, etc., Bridge 58 - Palouse River, West of Perma, Washington, undated
- ItemBB015724 - Northern Pacific Engineering Drawing: Shop Plan - Lateral, etc., Bridge 58 - Palouse River, West of Perma, Washington, undated
- ItemBB015725 - Northern Pacific Engineering Drawing: Standard Plan Deck Plate Girder (DPG), Bridge 58 - Palouse River, West of Perma, Washington, undated
- ItemBB015726 - Northern Pacific Engineering Drawing: Standard Detail End Bearing, Bridge 58 - Palouse River, West of Perma, Washington, undated
- 6333 more...