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
- 6238 more...
- ItemBB027981 - Northern Pacific Engineering Drawing: Shop Plan - Swing Brace, Bridge 3.2 (72.2) - Hoquiam River, Washington, undated
- ItemBB027982 - Northern Pacific Engineering Drawing: Detail of Spur Gear, Bridge 3.2 (72.2) - Hoquiam River, Washington, undated
- ItemBB027987 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 62, West of Phosphate, Montana, 1965
- ItemBB027989 - Northern Pacific Engineering Drawing: Abutment Details, Bridge 57, West of Phosphate, Montana, undated
- ItemBB027991 - Northern Pacific Engineering Drawing: Shop Plan - Beams, Bridge 57, West of Phosphate, Montana, undated
- ItemBB027992 - Northern Pacific Engineering Drawing: Detail Concrete Slab/Abutment, Bridge 114 - Undercrossing, West of Bonner, Montana, 1908
- ItemBB027993 - Northern Pacific Engineering Drawing: Shop Plan - General Plan, Bridge 81 - Cowlitz River, South of Vader, Washington, undated
- ItemBB027994 - Northern Pacific Engineering Drawing: Shop Plan - General Plan, Bridge 81 - Cowlitz River, South of Vader, Washington, undated
- ItemBB027995 - Northern Pacific Engineering Drawing: Shop Plan - End Posts, Bridge 81 - Cowlitz River, South of Vader, Washington, undated
- 1481 more...