United States Department of the Interior Geological SurveySegar, Raymond W., 1914-2000Adolph quadrangle topographic map (N4645-W9215/7.5) featuring handwritten notations by Ray Segar in red ink and pencil regarding logging railroad lines and camps in the area between Esko and Twig. The hand written notations include information on the following: Minnesota and Northwestern Railroad line and logging camps noted with 'C'.JPEGengUnited States Department of the Interior Geological SurveyPublicCommunicationAdolph Quadrangle, Minnesota, 1953: 7.5 Minute Series (Topographic) MapMapsMinnesota--AdolphMinnesota1953University of Minnesota