1921. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1914, 1916 and 1920.";"Surveyed in cooperation with the States of Kentucky and Illinois."; (W 88⁰30ʹ00ʺ--W 8... Geological Survey (U.S.), Geological Survey Division (Urbana, Ill.), and Kentucky Geological Survey (Lexington, Ky.).
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1932. Geological Survey (U.S.). Contour interval 20 feet;"Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army.";"Surveyed in 1926 and 1928"... Geological Survey (U.S.), Geological Survey Division (Urbana, Ill.), and Kentucky Geological Survey (Lexington, Ky.).
1929. Geological Survey (U.S.). Contour interval 20 feet.;"Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army";"Surveyed in 1926";Relief s... Geological Survey (U.S.), Geological Survey Division (Urbana, Ill.), and Kentucky Geological Survey (Lexington, Ky.).
1929. Geological Survey (U.S.). Contour interval 20 feet.;"Illinos culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army";"Surveyed in 1926";... Geological Survey (U.S.), Geological Survey Division (Urbana, Ill.), and Kentucky Geological Survey (Lexington, Ky.).
805. Kialineq: Greenland
1944. Projection: Polyconic Projection; Series: AMS C401 Greenland 1:500,000 Topographic Series. National Geospatial-Intelligence Agency.
1982. Projection: WGS72 Mercator Projection; Series: Defense Mapping Agency Nautical Charts. National Geospatial-Intelligence Agency.
1986. Projection: WGS72 Mercator Projection; Series: Defense Mapping Agency Nautical Charts. National Geospatial-Intelligence Agency.
1952. Projection: Transverse Mercator Projection; Series: AMS C501 Greenland 1:250,000 Topographic Series. National Geospatial-Intelligence Agency.
1952. Projection: Transverse Mercator Projection; Series: AMS C501 Greenland 1:250,000 Topographic Series. National Geospatial-Intelligence Agency.
810. Knobhead: Antarctica
1993. Projection: Lambert Conformal Conic Projection: Standard Parallels -76º40' and -79º20'; Series: USGS 1:50,000 Topographic Series. United States Geological Survey.