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
- 4900 more...
- ItemBB019792 - Northern Pacific Engineering Drawing: Detail of Steel, Bridge 22.1 - Squire Creek, East of Oso, Washington, undated
- ItemBB019793 - Northern Pacific Engineering Drawing: General Plan/Falsework, Bridge 22.1 - Squire Creek, East of Oso, Washington, 1929
- ItemBB019801 - Northern Pacific Engineering Drawing: General Plan, Bridge 39 - Umatilla River, Union Pacific Connection, Washington, 1901
- ItemBB019802 - Northern Pacific Engineering Drawing: Center Pier, Bridge 39 - Umatilla River, Union Pacific Connection, Washington, undated
- ItemBB019803 - Northern Pacific Engineering Drawing: Abutment, Bridge 39 - Umatilla River, Union Pacific Connection, Washington, undated
- ItemBB019804 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 39 - Umatilla River, Union Pacific Connection, Washington, 1958
- ItemBB019805 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 39 - Umatilla River, Union Pacific Connection, Washington, 1942
- ItemBB019806 - Northern Pacific Engineering Drawing: Plan Falsework/Pier, Bridge 52.1 - Satsop River, West of Satsop, Washington, 1917
- ItemBB019807 - Northern Pacific Engineering Drawing: Tie Dapping Plan, Bridge 52.1 - Satsop River, West of Satsop, Washington, undated
- 2819 more...