United States Department of the Interior Geological SurveyState of Minnesota, Department of AdministrationSegar, Raymond W., 1914-2000Sassas Creek quadrangle topographic map (N4745-W9230/7.5) featuring handwritten notations by Ray Segar in red ink regarding logging railroad lines in the area east of Cook.JPEGengUnited States Department of the Interior Geological SurveyPublicCommunicationSassas Creek Quadrangle, Minnesota-St. Louis County, 1964: 7.5 Minute Series (Topographic) MapMapsMinnesota--Angora TownshipMinnesota1964University of Minnesota