PROJCS["US_National_Atlas_Equal_Area",GEOGCS["GCS_Sphere_Clarke_1866_Authalic",DATUM["D_Sphere_Clarke_1866_Authalic",SPHEROID["Sphere_Clarke_1866_Authalic",6370997.0,0.0]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Azimuthal_Equal_Area"],PARAMETER["Latitude of natural origin",45.0],PARAMETER["Longitude of natural origin",-100.0],PARAMETER["False easting",0.0],PARAMETER["False northing",0.0],UNIT["Meter",1.0]]