Version History for: Langenheim, V.E., Morin, R.L., Davidson, J.G., Schmidt, K.M., and Blank, H.R., Jr., 1999, Isostatic gravity map of the Las Vegas 30 x 60 minute quadrangle, California and Nevada: U.S. Geological Survey Open-File Report 99-398, scale 1:100,000. Version 1.0 - June 6, 2005 Migrated from old server to http://pubs.usgs.gov/of/1999/of99-398/ - October 20, 1999 First release, on the Web only, at http://geopubs.wr.usgs.gov/open-file/of99-398