United States Department of the Interior Geological SurveySegar, Raymond W., 1914-2000Allen quadrangle topographic map (N4730-W9200/7.5) featuring handwritten notations by Ray Segar in red ink and pencil regarding logging railroad lines and camps in the area between Aurora and Babbitt. The hand written notations include information on the following: Northampton & Bath Railroad line (NB); Shank logging camps noted with 'C'; Shank Lumber Company;JPEGengUnited States Department of the Interior Geological SurveyPublicCommunicationAllen Quadrangle, Minnesota-St. Louis County, 1962: 7.5 Minute Series (Topographic) MapMapsMinnesota--Hoyt LakesMinnesota1962University of Minnesota