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
- 2449 more...
- ItemBB016930 - Northern Pacific Engineering Drawing: New Masonry, Bridge 76 - Hell Gate River, West of Drummond, Montana, undated
- ItemBB016931 - Northern Pacific Engineering Drawing: Masonry as Constructed, Bridge 76 - Hell Gate River, West of Drummond, Montana, undated
- ItemBB016932 - Northern Pacific Engineering Drawing: General Plan/Detail Pier, Bridge 76 - Hell Gate River, West of Drummond, Montana, undated
- ItemBB016933 - Northern Pacific Engineering Drawing: Detail of Abutments, Bridge 76 - Hell Gate River, West of Drummond, Montana, undated
- ItemBB016935 - Northern Pacific Engineering Drawing: Present Position of River, Bridge 76 - Hell Gate River, West of Drummond, Montana, undated
- ItemBB016936 - Northern Pacific Engineering Drawing: General Plan/Abutment/Pier, Bridge 90 - Hell Gate River, West of Nimrod, Montana, 1908
- ItemBB016937 - Northern Pacific Engineering Drawing: Masonry Plans, Bridge 90 - Hell Gate River, West of Nimrod, Montana, undated
- ItemBB016938 - Northern Pacific Engineering Drawing: Masonry Plans, Bridge 90 - Hell Gate River, West of Nimrod, Montana, undated
- ItemBB016939 - Northern Pacific Engineering Drawing: Piers/Abutments, Bridge 90 - Hell Gate River, West of Nimrod, Montana, undated
- 5270 more...