Version history for: Frost, Thomas P., and Zientek, Michael L., 2006, Copper- silver deposits of the Revett Formation, Montana and Idaho, origin and resource potential: U.S. Geological Survey Fact Sheet 2006-3072. [available on the World Wide Web at http://pubs.usgs.gov/fs/2006/3072/ ]. Version 1.0, May 30, 2006 Initial release online at http://pubs.usgs.gov/fs/2006/3072/