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
- 5751 more...
- ItemBB020861 - Northern Pacific Engineering Drawing: Test Holes, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020862 - Northern Pacific Engineering Drawing: Shop Plan - Lateral Brace, Bridge 1.4 - 7th Avenue, South of Sunset Junction, Washington, undated
- ItemBB020863 - Northern Pacific Engineering Drawing: Shop Plan - Bracing, Bridge 1.4 - 7th Avenue, South of Sunset Junction, Washington, undated
- ItemBB020864 - Northern Pacific Engineering Drawing: Shop Plan - Beam/Brackets, Bridge 1.4 - 7th Avenue, South of Sunset Junction, Washington, undated
- ItemBB020865 - Northern Pacific Engineering Drawing: Shop Plan - Beam/Bearings, Bridge 1.4 - 7th Avenue, South of Sunset Junction, Washington, undated
- ItemBB020866 - Northern Pacific Engineering Drawing: Shop Plan - Flange/Girder, Bridge 1.4 - 7th Avenue, South of Sunset Junction, Washington, undated
- ItemBB020867 - Northern Pacific Engineering Drawing: High Strength Bolt Field Connection, Bridge 1.4 - 7th Avenue, South of Sunset Junction, Washington, undated
- ItemBB020868 - Northern Pacific Engineering Drawing: Field Rivet/Bolts, Bridge 1.4 - 7th Avenue, South of Sunset Junction, Washington, undated
- ItemBB020869 - Northern Pacific Engineering Drawing: General Plan, Bridge 92 - Clark Fork River, West of Colby, Montana, 1899
- 1968 more...