1989. Projection: Polar Stereographic Projection: Standard Parallel -80º14'; Series: USGS 1:250,000 Topographic Reconnaissance Series. United States Geological Survey.
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1970. Projection: Lambert Conformal Conic Projection: Standard Parallels -68º40' and -71º20'; Series: USGS 1:250,000 Topographic Reconnaissance Series. United States Geological Survey.
1893. Bien, Julius, 1826-1909 and McGee, W J, 1853-1912. Relief shown by contour lines. In upper border: U.S. Geological Survey. Fourteenth annual report, pl. II. Shows Indian reservations. Includes legen... United States Geological Survey.
1968. Projection: Lambert Conformal Conic Projection: Standard Parallels -72º40' and -75º20'; Series: USGS 1:250,000 Topographic Reconnaissance Series. United States Geological Survey.
1968. Projection: Lambert Conformal Conic Projection: Standard Parallels -72º40' and -75º20'; Series: USGS 1:250,000 Topographic Reconnaissance Series. United States Geological Survey.
1972. Projection: Polar Stereographic Projection: Standard Parallel -71º; Series: USGS Sketch Maps. United States Geological Survey.
1996. Projection: Lambert Conformal Conic Projection - Standard Parallels -76º40' and -79º20'; Series: USGS Satellite Image Maps. United States Geological Survey.
1986. Projection: Lambert Conformal Conic Projection: Standard Parallels -76º40' and -79º20'; Series: USGS 1:250,000 Topographic Reconnaissance Series. United States Geological Survey.
1975. Projection: Lambert Conformal Conic Projection - Standard Parallels -76º40' and -79º20'; Series: USGS Satellite Image Maps. United States Geological Survey.
1972. Projection: Lambert Conformal Conic Projection: Standard Parallels -76º40' and -79º20'; Series: USGS 1:250,000 Topographic Reconnaissance Series. United States Geological Survey.