Version history for


  Langenheim, V.E., Lee, Tien-Chang, Biehler, Shawn, 
       Jachens, R.C., and Morton, D.M., 2006, Isostatic 
       gravity map with geology of the Santa Ana 30' x 60' 
       quadrangle, southern California:  U.S. Geological 
       Survey Scientific Investigations Map 2951 
       [available on the World Wide Web at URL 
       http://pubs.usgs.gov/sim/2006/2951/ ].


  Version 1.0, October 17, 2006

  Initial release online at
  http://pubs.usgs.gov/sim/2006/2951/