United States Department of the Interior Geological SurveySegar, Raymond W., 1914-2000Two Harbors quadrangle topographic map (N4700-W9130/15) featuring handwritten notations by Ray Segar in pencil and red ink regarding logging railroad lines in the area north of Two Harbors.JPEGengUnited States Department of the Interior Geological SurveyPublicCommunicationTwo Harbors Quadrangle, Minnesota-Lake County, 1957: 15 Minute Series (Topographic) MapMapsMinnesota--Two HarborsMinnesota1957University of Minnesota