Great Northern Railway Historical Society Blueprint Collection JSBP1324, Duluth - Superior, 1907. Northern Pacific Railroad Blueprint, Profile of Approaches to Bridge. Approches to St Louis Bay Bridge. Interstate Commerce Commission Account Number 3, Grading.
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Scope note(s)
At Pacific Northwest Railroad Archive, geographic drawings including maps, plats (cadastral maps) and track elevation (grade) profiles.
Source note(s)
LC Subject Authority Heading: Cartographic materials: http://id.loc.gov/authorities/subjects/sh00003498