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
- 3067 more...
- ItemBB017608 - Northern Pacific Engineering Drawing: Proposed Abutment Number 4, Bridge 93.3 - Ostrander Creek, South of Castle Rock, Washington, undated
- ItemBB017609 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 93.3 - Ostrander Creek, South of Castle Rock, Washington, undated
- ItemBB017611 - Northern Pacific Engineering Drawing: Shop Plan - Framing Plan, Bridge 93.3 - Ostrander Creek, South of Castle Rock, Washington, undated
- ItemBB017612 - Northern Pacific Engineering Drawing: Shop Plan - Details, Bridge 93.3 - Ostrander Creek, South of Castle Rock, Washington, undated
- ItemBB017613 - Northern Pacific Engineering Drawing: Shop Plan - Deck Girder Span, Bridge 93.3 - Ostrander Creek, South of Castle Rock, Washington, undated
- ItemBB017614 - Northern Pacific Engineering Drawing: Shop Plan - Deck Girder Span, Bridge 93.3 - Ostrander Creek, South of Castle Rock, Washington, undated
- ItemBB017615 - Northern Pacific Engineering Drawing: Shop Plan - Deck Girder Span, Bridge 93.3 - Ostrander Creek, South of Castle Rock, Washington, undated
- ItemBB017645 - Northern Pacific Engineering Drawing: Shop Plan - Details, Signal Bridge, Livingston, Montana, undated
- ItemBB017646 - Northern Pacific Engineering Drawing: General Plan, Bridge 0 - Clark Fork River, North of Phosphate, Montana, 1958
- 4652 more...