Suggested citation and version history:


  Christiansen, R.L., Lowenstern, J.B., Smith, R.B., 
       Heasler, Henry, Morgan, L.A., Nathenson, Manuel, 
       Mastin, L.G.,Muffler, L.J.P., and Robinson, J.E., 
       2007, Preliminary assessment of volcanic and 
       hydrothermal hazards in Yellowstone National Park 
       and vicinity:  U.S. Geological Survey Open-file 
       Report 2007-1071, 94 p. 
       [http://pubs.usgs.gov/of/2007/1071/].


  Version 1.1, April 3, 2007

  Made minor edits to text


  Version 1.0, March 29, 2007

  Initial release online at
  http://pubs.usgs.gov/of/2007/1071/