1997. Swithinbank, Williams, Ferrigno. Projection: Polar Stereographic Projection: Standard Parallel -71º; Series: USGS Geologic Investigations Series. United States Geological Survey.
1958. Geological Survey (U.S.). Contour interval 10 feet;"Culture and drainage in part compiled from aerial photographs taken 1956. Topography by planetable surveys 1957.";Relief ... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1959. Geological Survey (U.S.),cartographer. Relief shown by contours and spot heights.; Shows portions of Harrison County, Indiana, and Meade County, Kentucky.; Compiled in 1956 from 1:25,000... United States, Department of the Interior, Geological Survey.