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
- 3404 more...
- ItemBB017990 - Northern Pacific Engineering Drawing: Detail of Abutment, Bridge 21 - Irrigation Canal, West of Laurel, Montana, 1917
- ItemBB017991 - Northern Pacific Engineering Drawing: Detail of Abutment, Bridge 139, West of Chestnut, Montana, 1918
- ItemBB017992 - Northern Pacific Engineering Drawing: Concrete Trestle, Bridge 146, West of Bozeman, Montana, 1917
- ItemBB017993 - Northern Pacific Engineering Drawing: Water Proofing Detail, Bridge 71 - Division Street, Spokane, Washington, undated
- ItemBB017994 - Northern Pacific Engineering Drawing: Water Proofing Detail, Bridge 71 - Division Street, Spokane, Washington, undated
- ItemBB017995 - Northern Pacific Engineering Drawing: Expansion Joint - Sprague/Division, Bridge 71 - Division Street, Spokane, Washington, undated
- ItemBB017996 - Northern Pacific Engineering Drawing: Water Proofing Detail, Bridge 71 - Division Street, Spokane, Washington, undated
- ItemBB017997 - Northern Pacific Engineering Drawing: Detail Expansion Joints, Bridge 71 - Division Street, Spokane, Washington, undated
- ItemBB017998 - Northern Pacific Engineering Drawing: Detail Transformer Room/Box, Bridge 71 - Division Street, Spokane, Washington, undated
- 4315 more...