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
- 210 more...
- ItemBB014434 - Northern Pacific Engineering Drawing: Retaining Walls, Bridge 21 (1.4) - Highway, North of Allyn, Washington, undated
- ItemBB014435 - Northern Pacific Engineering Drawing: Structural Details, Bridge 21 (1.4) - Highway, North of Allyn, Washington, undated
- ItemBB014436 - Northern Pacific Engineering Drawing: Structural Details, Bridge 21 (1.4) - Highway, North of Allyn, Washington, undated
- ItemBB014437 - Northern Pacific Engineering Drawing: Abutment and Retaining Wall, Bridge 21 (1.4) - Highway, North of Allyn, Washington, undated
- ItemBB014438 - Northern Pacific Engineering Drawing: Plan and Elevation, Bridge 25 (1.5) - Highway, North of Allyn, Washington, 1944
- ItemBB014439 - Northern Pacific Engineering Drawing: Retaining Walls, Bridge 25 (1.5) - Highway, North of Allyn, Washington, undated
- ItemBB014440 - Northern Pacific Engineering Drawing: Structural Details, Bridge 25 (1.5) - Highway, North of Allyn, Washington, undated
- ItemBB014441 - Northern Pacific Engineering Drawing: Structural Details, Bridge 25 (1.5) - Highway, North of Allyn, Washington, undated
- ItemBB014442 - Northern Pacific Engineering Drawing: Abutment and Retaining Wall, Bridge 25 (1.5) - Highway, North of Allyn, Washington, undated
- 7509 more...