EarthSat GeoCover

GeoCover-Ortho (Orthorectified) products are the actual satellite images derived from Landsat TM scenes and are the most accurate, commercially available base maps of the world. GeoCover-LC (Land Cover) products consist of a medium resolution land cover database, prepared from consistently orthorectified Landsat Thematic Mapper (TM) imagery.

The link address is: http://www.mdafederal.com/geocover