Version history for Moore, Jeffrey M., and Wilhelms, Don E., 2007, Geologic map of part of western Hellas Planitia, Mars: U.S. Geological Survey Scientific Investigations Map 2953 [http://pubs.usgs.gov/sim/2007/2953/]. Version 1.0, November 14, 2007 Initial release online at http://pubs.usgs.gov/sim/2007/2953/