Suggested citation and version history for Battaglia, M., Dzurisin, D., Langbein, J., Svarc, J. and Hill, D.P., 2008, Converting NAD83 GPS heights into NAVD88 elevations with LVGEOID, a hybrid geoid height model for the Long Valley volcanic region, California: U.S. Geological Survey Scientific Investigation Report 2007-5255, 32 p. [http://pubs.usgs.gov/sir/2007/5255/]. Version 1.0 January 18, 2008 Initial release online at http://pubs.usgs.gov/sir/2007/5255/