United States Department of the Interior Geological SurveyState of Minnesota, Iron Range Resources and Rehabilitation CommissionSegar, Raymond W., 1914-2000Biwabik quadrangle topographic map (N4730-W9215/7.5) featuring handwritten notations by Ray Segar in red ink and pencil regarding logging railroad lines and camps in the area between Biwabik and Palo. The hand written notations include information on the following: logging camps noted with 'C'.JPEGengUnited States Department of the Interior Geological SurveyPublicCommunicationBiwabik Quadrangle, Minnesota-St. Louis County,1950: 7.5 Minute Series (Topographic) MapMapsMinnesota--BiwabikMinnesota1950University of Minnesota