Version history for


  Morton, D.M., compiler, digital preparation by Hauser, 
       Rachel M., and Ruppert, Kelly R., 2004, Preliminary 
       digital geologic map of the Santa Ana 30' x 60' 
       quadrangle, Southern California:  U.S. Geological 
       Survey Open-File Report 99-172, version 2.0.


  Version 2.1, July 8, 2004

  Made revisions to sanana2.zip; new file dated June 17, 2004


  Version 2.0, May 11, 2004

  April, 2004, revision released online at
  http://pubs.usgs.gov/of/1999/of99-172/ 

  Version 1.0 migrated to
  http://pubs.usgs.gov/of/1999/of99-172/version1/


  Version 1.0, April, 1999

  Updated: 10/17/2000

  Intital release online at
  http://wrgis.wr.usgs.gov/open-file/of99-172/