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
- 4294 more...
- 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
- ItemBB018953 - Northern Pacific Engineering Drawing: Detail of Abutments, Bridge 93.3 - Ostrander Creek, South of Castle Rock, Washington, undated
- ItemBB018955 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 93.3 - Ostrander Creek, South of Castle Rock, Washington, 1940
- ItemBB018956 - Northern Pacific Engineering Drawing: Tie Framing Plan, Bridge 93.3 - Ostrander Creek, South of Castle Rock, Washington, undated
- ItemBB018957 - Northern Pacific Engineering Drawing: Shop Plan - Diagonal/Anchor, Bridge 93.3 - Ostrander Creek, South of Castle Rock, Washington, undated
- 3425 more...