Version history for Langenheim, V.E., Hildenbrand, T.G., Jachens, R.C., Campbell, R.H., and Yerkes, R.F., 2006, Aeromagnetic map with geology of the Los Angeles 30 x 60 minute quadrangle, southern California: U.S. Geological Survey Scientific Investigations Map 2950, scale 100,000 [http://pubs.usgs.gov/sim/2006/2950/]. Version 1.0 November 19, 2009 Fixed where labels were reversed for the two earthquake mainshocks October 23, 2006 Initial release online at http://pubs.usgs.gov/sim/2006/2950/ 1997 Earlier map released in paper form as U.S. Geological Survey Open-File Report 97-162 which has been superseded by tjos Scientific Investigations Map 2950