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
- 4290 more...
- ItemBB018924 - Northern Pacific Engineering Drawing: Shop Plan - Motor Mast, Bridge 3.2 (72.2) - Hoquiam River, Hoquiam, Washington, undated
- ItemBB018925 - Northern Pacific Engineering Drawing: Proposed Foot Bridge, Bridge 16+1973 - Overhead Ped, Steilacoom, Washington, 1913
- ItemBB018926 - Northern Pacific Engineering Drawing: Overhead Crossing, Bridge 23+1016 - Overhead, South of Ketron, Washington, 1913
- ItemBB018947 - Northern Pacific Engineering Drawing: General Plan, Bridge 39.1 - Chehalis Western Railroad, South of East Olympia, Washington, 1928
- ItemBB018948 - Northern Pacific Engineering Drawing: Abutment Details, Bridge 39.1 - Chehalis Western Railroad, South of East Olympia, Washington, undated
- ItemBB018949 - Northern Pacific Engineering Drawing: Steel Plan, Bridge 39.1 - Chehalis Western Railroad, South of East Olympia, Washington, undated
- ItemBB018950 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 39.1 - Chehalis Western Railroad, South of East Olympia, Washington, 1963
- ItemBB018951 - Northern Pacific Engineering Drawing: Skew Beam Spans, Bridge 39.1 - Chehalis Western Railroad, South of East Olympia, Washington, undated
- ItemBB018952 - Northern Pacific Engineering Drawing: Detail of Piers, Bridge 93.3 - Ostrander Creek, South of Castle Rock, Washington, 1914
- 3429 more...