United States Department of the Interior Geological SurveyState of MinnesotaSegar, Raymond W., 1914-2000Echo Lake quadrangle topographic map (N4807.5-W9222.5/7.5) featuring handwritten notations by Ray Segar in red ink and pencil regarding logging railroad lines and camps in the Echo Lake area. The hand written notations include information on the following: logging camps noted with 'C'.JPEGengUnited States Department of the Interior Geological SurveyPublicCommunicationEcho Lake Quadrangle, Minnesota - St. Louis County, 1963: 7.5 Minute Series (Topographic) MapMapsMinnesota--St. Louis CountyMinnesota1963University of Minnesota