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
- 2159 more...
- ItemBB016604 - Northern Pacific Engineering Drawing: Repair to Stringer Conn, Bridge 11 - Stillaguamish River, East of Oso, Washington, undated
- ItemBB016605 - Northern Pacific Engineering Drawing: Pin/Nuts/Ring Floor, Bridge 11 - Stillaguamish River, East of Oso, Washington, undated
- ItemBB016606 - Northern Pacific Engineering Drawing: Shop Plan - Floor Beam, Bridge 11 - Stillaguamish River, East of Oso, Washington, undated
- ItemBB016607 - Northern Pacific Engineering Drawing: Shop Plan - Floor Beam, Bridge 11 - Stillaguamish River, East of Oso, Washington, undated
- ItemBB016608 - Northern Pacific Engineering Drawing: Shop Plan - Stringer Brace, Bridge 11 - Stillaguamish River, East of Oso, Washington, undated
- ItemBB016609 - Northern Pacific Engineering Drawing: Shop Plan - Transverse Bracing, Bridge 11 - Stillaguamish River, East of Oso, Washington, undated
- ItemBB016610 - Northern Pacific Engineering Drawing: Shop Plan - Lateral Brace, Bridge 11 - Stillaguamish River, East of Oso, Washington, undated
- ItemBB016611 - Northern Pacific Engineering Drawing: List of Field Rivets, Bridge 11 - Stillaguamish River, East of Oso, Washington, undated
- ItemBB016612 - Northern Pacific Engineering Drawing: General Plan, Bridge 2 - Stillaguamish River, East of Arlington, Washington, 1900
- 5560 more...