1948. United States Geological Survey.
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1948. United States Geological Survey.
1978. Boyd, Walter W., Jr., Ford, Arthur B. (Arthur Barnes), 1932-, Nelson, Willis H. (Willis Howard), 1920-2010, and Schmidt, D. L. (Dwight L.). Projection: Polar Stereographic Projection: Standard Parallels -80º14'; Series: USGS 1:250,000 Geologic Reconnaissance Series. United States Geological Survey.
1989. Projection: Polar Stereographic Projection: Standard Parallel -80º14'; Series: USGS 1:250,000 Topographic Reconnaissance Series. United States Geological Survey.
1968. Projection: Polar Stereographic Projection: Standard Parallel -71º; Series: USGS Sketch Maps. United States Geological Survey.
1978. Nelson, Willis H. (Willis Howard), 1920-2010, Schmidt, D. L. (Dwight L.), and Williams, Paul L. (Paul Lincoln), 1932-2020. Projection: Polar Stereographic Projection: Standard Parallels -80º14'; Series: USGS 1:250,000 Geologic Reconnaissance Series. United States Geological Survey.
1989. Projection: Polar Stereographic Projection: Standard Parallel -80º14'; Series: USGS 1:250,000 Topographic Reconnaissance Series. United States Geological Survey.
1969. Projection: Lambert Conformal Conic Projection: Standard Parallels -72º40' and -75º20'; Series: USGS 1:250,000 Topographic Reconnaissance Series. United States Geological Survey.
1967. Projection: Polar Stereographic Projection: Standard Parallel -80º14'; Series: USGS 1:250,000 Topographic Reconnaissance Series. United States Geological Survey.
1984. Projection: Polar Stereographic Projection: Standard Parallel -80º14'; Series: USGS 1:250,000 Topographic Reconnaissance Series. United States Geological Survey.