Version history for


  Tabor, R.W., Frizzell, V.A., Jr., Booth, D.B., and Waitt, 
       R.B., 2006, Database for the geologic map of the 
       Snoqualmie Pass 30-minute by 60-minute quadrangle, 
       Washington (I-2538) U.S. Geological Survey Data 
       Series 186 [available on the World Wide Web at 
       http://pubs.usgs.gov/ds/2006/186/ ].



  Version 1.0


  May 16, 2006

  Initial release online at
  http://pubs.usgs.gov/ds/2006/186/


  The original geologic map for this database was published 
  in 2000, based on geologic mapping and compilation by the 
  authors during 1975 through 1982