Suggested citation and version history for: Koch, R.D., Ramsey, D.W., and Christiansen, R.L., 2011, Database for the Quaternary and Pliocene Yellowstone Plateau volcanic field of Wyoming, Idaho, and Montana: U.S. Geological Survey Data Series 551 (CD-ROM) [http://pubs.usgs.gov/ds/551/]. Version 1.0 March 1, 2011 Refined database file PP729-G.zip February 24, 2011 Initial release online at http://pubs.usgs.gov/ds/551/ April 2011 Released on CD-ROM