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
- 2498 more...
- ItemBB016980 - Northern Pacific Engineering Drawing: Marking Plan Northern Pacific Old Girder, Bridge 59 (98) - Hell Gate River, West of Phosphate, Montana, undated
- ItemBB016981 - Northern Pacific Engineering Drawing: Masonry Design, Bridge 59.1 (99) - Hell Gate River, West of Phosphate, Montana, undated
- ItemBB016982 - Northern Pacific Engineering Drawing: Masonry Design, Bridge 59.1 (99) - Hell Gate River, West of Phosphate, Montana, undated
- ItemBB016983 - Northern Pacific Engineering Drawing: Masonry Design, Bridge 59.1 (99) - Hell Gate River, West of Phosphate, Montana, undated
- ItemBB016984 - Northern Pacific Engineering Drawing: General Plan/Detail Pier, Bridge 59.1 (99) - Hell Gate River, West of Phosphate, Montana, 1908
- ItemBB016985 - Northern Pacific Engineering Drawing: Detail Abutments, Bridge 59.1 (99) - Hell Gate River, West of Phosphate, Montana, undated
- ItemBB016986 - Northern Pacific Engineering Drawing: Pier/Abutments, Bridge 59.1 (99) - Hell Gate River, West of Phosphate, Montana, undated
- ItemBB016988 - Northern Pacific Engineering Drawing: Cross Section on Centerline Between Tracks, Bridge 59.1 (99) - Hell Gate River, West of Phosphate, Montana, undated
- ItemBB016989 - Northern Pacific Engineering Drawing: General Plan, Bridge 87 (139) - Hell Gate River, West of Bearmouth, Montana, undated
- 5221 more...