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
- 1015 more...
- ItemBB015296 - Northern Pacific Engineering Drawing: Concrete Trestle, Bridge 42, Sprague, Washington, undated
- ItemBB015297 - Northern Pacific Engineering Drawing: Detail of Abutment, Bridge 76, South of Paha, Washington, undated
- ItemBB015298 - Northern Pacific Engineering Drawing: Detail of Concrete Trestle, Bridge 106, West of Cunningham, Washington, undated
- ItemBB015299 - Northern Pacific Engineering Drawing: Detail of Concrete Trestle, Bridge 106.3, West of Cunningham, Washington, 1917
- ItemBB015300 - Northern Pacific Engineering Drawing: Masonry Plan, Bridge 135, West of Sagemoor, Washington, 1917
- ItemBB015301 - Northern Pacific Engineering Drawing: General Plan, Bridge 169 - Quartz Creek, West of Rivulet, Montana, 1916
- ItemBB015302 - Northern Pacific Engineering Drawing: Detail of Masonry, Bridge 169 - Quartz Creek, West of Rivulet, Montana, undated
- ItemBB015303 - Northern Pacific Engineering Drawing: Stress Sheet, Bridge 169 - Quartz Creek, West of Rivulet, Montana, undated
- ItemBB015306 - Northern Pacific Engineering Drawing: Shop Plan - Erection Plan, Bridge 169 - Quartz Creek, West of Rivulet, Montana, undated
- 6704 more...