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
- 3110 more...
- ItemBB017681 - Northern Pacific Engineering Drawing: Credits and Manhole Detail, Bridge 71.5 - Station Subway, Spokane, Washington, undated
- ItemBB017682 - Northern Pacific Engineering Drawing: Electric Work Power and Light, Bridge 71.5 - Station Subway, Spokane, Washington, undated
- ItemBB017683 - Northern Pacific Engineering Drawing: List - Bridge, Culvert and Siphon, Bridge List - Bozeman to Logan - 2nd Track, 1917
- ItemBB017684 - Northern Pacific Engineering Drawing: Proposed Reconditioning, Bridge 21, North of Stuart, Montana, 1948
- ItemBB017685 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 21, North of Stuart, Montana, undated
- ItemBB017686 - Northern Pacific Engineering Drawing: Proposed Concrete Trestle, Bridge 6, Silver Bow, Montana, undated
- ItemBB017687 - Northern Pacific Engineering Drawing: Proposed Concrete Trestle, Bridge 6A, Silver Bow, Montana, undated
- ItemBB017688 - Northern Pacific Engineering Drawing: Proposed Concrete Trestle, Bridge 6, Silver Bow, Montana, undated
- ItemBB017689 - Northern Pacific Engineering Drawing: Bent and Abutment Details, Bridge 6, Silver Bow, Montana, undated
- 4609 more...