United States Department of the Interior Geological SurveyState of Minnesota, Department of AdministrationSegar, Raymond W., 1914-2000Horsehead Lake quadrangle topographic map (N4737.5-W9315/7.5) featuring handwritten notations by Ray Segar in pencil and red ink regarding logging railroad lines and camps in the Horsehead Lake area of the George Washington State Forest. The hand written notations include information on the following: Middlesbrough and Redcar Railway (M&RR) Railroad line, logging camps noted with 'C' and, Martin Brothers Lumber Company, and International Lumber Company.JPEGengUnited States Department of the Interior Geological SurveyPublicCommunicationHorsehead Lake Quadrangle, Minnesota - Itasca County, 1971: 7.5 Minute Series Orthophoto (Topographic) MapMapsMinnesota--Itasca CountyMinnesota1971University of Minnesota