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
- 5172 more...
- ItemBB020093 - Northern Pacific Engineering Drawing: Shop Plan - Floor Beam and Bill of Material, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB020094 - Northern Pacific Engineering Drawing: Shop Plan - Posts, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB020095 - Northern Pacific Engineering Drawing: Shop Plan - Portal, Strut, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB020096 - Northern Pacific Engineering Drawing: Shop Plan - Pieces, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB020097 - Northern Pacific Engineering Drawing: New End Bearings, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, 1928
- ItemBB020098 - Northern Pacific Engineering Drawing: Miscellaneous Details, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, undated
- ItemBB020184 - Northern Pacific Engineering Drawing: Details and Bill of Material, Bridge 3.2 - Lake Pend Oreille, West of Sandpoint, Idaho, undated
- ItemBB020186 - Northern Pacific Engineering Drawing: Tie and Shim Details - Span, Bridge 3.2 - Lake Pend Oreille, West of Sandpoint, Idaho, undated
- ItemBB020189 - Northern Pacific Engineering Drawing: Details and Bill of Material, Bridge 3.2 - Lake Pend Oreille, West of Sandpoint, Idaho, undated
- 2547 more...