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
- 5056 more...
- ItemBB019958 - Northern Pacific Engineering Drawing: 50 Foot - 11 Inch Through Plate Girder, Bridge 87 - Highway 20, Sedro - Woolley, Washington, undated
- ItemBB019959 - Northern Pacific Engineering Drawing: Timber Approach, Bridge 87 - Highway 20, Sedro - Woolley, Washington, undated
- ItemBB019960 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 87 - Highway 20, Sedro - Woolley, Washington, undated
- ItemBB019961 - Northern Pacific Engineering Drawing: Shop Plan - Under Crossing, Bridge 87 - Highway 20, Sedro - Woolley, Washington, undated
- ItemBB019962 - Northern Pacific Engineering Drawing: Shop Plan - Under Crossing, Bridge 87 - Highway 20, Sedro - Woolley, Washington, undated
- ItemBB019963 - Northern Pacific Engineering Drawing: Shop Plan - Under Crossing, Bridge 87 - Highway 20, Sedro - Woolley, Washington, undated
- ItemBB019964 - Northern Pacific Engineering Drawing: Shop Plan - Under Crossing, Bridge 87 - Highway 20, Sedro - Woolley, Washington, undated
- ItemBB019965 - Northern Pacific Engineering Drawing: Shop Plan - Under Crossing, Bridge 87 - Highway 20, Sedro - Woolley, Washington, undated
- ItemBB019966 - Northern Pacific Engineering Drawing: 70 Foot Deck Girder, Bridge 78 - Olequa Creek, South of Vader, Washington, undated
- 2663 more...