Version history for


  Blakely, Richard J., Hillhouse, John W., and Morin, 
       Robert L., 2005, Ground-magnetic studies of the 
       Amargosa Desert region, California and Nevada:  U.S. 
       Geological Survey Open-File Report 2005-1132.  
       [available on the World Wide Web at 
       http://pubs.usgs.gov/of/2005/1132/ ].


  Version 1.0, April 5, 2005

  Intital release online at
  http://pubs.usgs.gov/of/2005/1132/

  Shapefile added June 9, 2008, by J. Watson