PROJCS["US National Atlas Equal Area (deprecated)", GEOGCS["Unspecified datum based upon the Clarke 1866 Authalic Sphere (deprecated)", DATUM["Not_specified_based_on_Clarke_1866_Authalic_Sphere", SPHEROID["Clarke 1866 Authalic Sphere",6370997,0, AUTHORITY["EPSG","7052"]], AUTHORITY["EPSG","6052"]], PRIMEM["Greenwich",0, AUTHORITY["EPSG","8901"]], UNIT["degree",0.0174532925199433, AUTHORITY["EPSG","9122"]], AUTHORITY["EPSG","4052"]], PROJECTION["Lambert_Azimuthal_Equal_Area"], PARAMETER["latitude_of_center",45], PARAMETER["longitude_of_center",-100], PARAMETER["false_easting",0], PARAMETER["false_northing",0], UNIT["metre",1, AUTHORITY["EPSG","9001"]], AXIS["Easting",EAST], AXIS["Northing",NORTH], AUTHORITY["EPSG","2163"]]