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
- 2986 more...
- ItemBB017527 - Northern Pacific Engineering Drawing: Beam Spans, Standard Plan, undated
- ItemBB017528 - Northern Pacific Engineering Drawing: Helper Bents, Bridge 0.1 - Marshall Creek, South of Marshall, Washington, 1944
- ItemBB017529 - Northern Pacific Engineering Drawing: Repairs to Pier, Bridge 3.2 - Lake Pend Oreille, West of Sandpoint, Idaho, 1950
- ItemBB017530 - Northern Pacific Engineering Drawing: Falsework and Masonry Repairs, Bridge 3.2 - Lake Pend Oreille, West of Sandpoint, Idaho, undated
- ItemBB017531 - Northern Pacific Engineering Drawing: Masonry Repairs, Bridge 3.2 - Lake Pend Oreille, West of Sandpoint, Idaho, 1947
- ItemBB017532 - Northern Pacific Engineering Drawing: Pier Repairs, Bridge 3.2 - Lake Pend Oreille, West of Sandpoint, Idaho, 1949
- ItemBB017533 - Northern Pacific Engineering Drawing: Pier Repairs, Bridge 3.2 - Lake Pend Oreille, West of Sandpoint, Idaho, 1966
- ItemBB017534 - Northern Pacific Engineering Drawing: Cavity Plans, Piers, Bridge 3.2 - Lake Pend Oreille, West of Sandpoint, Idaho, undated
- ItemBB017535 - Northern Pacific Engineering Drawing: Pier 30 Repairs, Bridge 3.2 - Lake Pend Oreille, West of Sandpoint, Idaho, 1954
- 4733 more...