Version history for:


  Todd, Victoria R., 2004, Preliminary geologic map of the 
       El Cajon 30' x 60' quadrangle, southern California, 
       digital preparation by Alvarez, Rachel M., and TGS, 
       Techni Graphic Systems, Inc.:  U.S. Geological 
       Survey Open-File Report 2004-1361, scale 1:100,000.


  Version 1.0, October 29, 2004

  Initial release online at
  http://pubs.usgs.gov/of/2004/1361/