Version history for Roberts, Carter W., Jachens, Robert C., Ponce, David A., and Langenheim, Victoria E., 2004, Isostatic residual gravity map of the Santa Clara Valley and vicinity, California: U.S. Geological Survey Open- File Report 2004-1297, scale 1:100,000. Version 1.0, August 19, 2004 Intital release online at http://pubs.usgs.gov/of/2004/1297/