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
- 2441 more...
- ItemBB016892 - Northern Pacific Engineering Drawing: Post for Signal Lights, Bridge 68 - Wishkah River, West of Aberdeen Junction, Washington, undated
- ItemBB016893 - Northern Pacific Engineering Drawing: Erection Diagram Lights, Bridge 68 - Wishkah River, West of Aberdeen Junction, Washington, undated
- ItemBB016894 - Northern Pacific Engineering Drawing: Diagram West Indicators, Bridge 68 - Wishkah River, West of Aberdeen Junction, Washington, undated
- ItemBB016895 - Northern Pacific Engineering Drawing: Detail of Pulley Blocks, Bridge 68 - Wishkah River, West of Aberdeen Junction, Washington, undated
- ItemBB016926 - Northern Pacific Engineering Drawing: Replace 2 Truss Span, Bridge 218 - Clark Fork River, West of Quinns, Montana, undated
- ItemBB016927 - Northern Pacific Engineering Drawing: Deck Plate Girder (DPG) Stringer Bracket/Bill of Material, Bridge 218 - Clark Fork River, West of Quinns, Montana, undated
- ItemBB016928 - Northern Pacific Engineering Drawing: General Plan/Pier/Abutment, Bridge 76 - Hell Gate River, West of Drummond, Montana, 1908
- ItemBB016929 - Northern Pacific Engineering Drawing: Miscellaneous Masonry, Bridge 76 - Hell Gate River, West of Drummond, Montana, undated
- ItemBB016930 - Northern Pacific Engineering Drawing: New Masonry, Bridge 76 - Hell Gate River, West of Drummond, Montana, undated
- 5278 more...