Suggested citation and version history for:


  Billingsley, George H., Priest, Susan S., and Felger, 
       Tracey J., 2007, Geologic map of the Cameron 30' x 
       60' quadrangle, Coconino County, northern Arizona:  
       U.S. Geological Survey Scientific Investigations Map 
       2977, scale 1;100,000. (available at 
       http://pubs.usgs.gov/sim/2007/2977/.)



  December 20, 2007
  Fixed a typo in the metadata so replaced:
  - digital shapefile package (cm_shape.zip)
  - digital dataset (cm_db.zip)
  -  FGDC compliant metadata (cmmeta.txt)

  December 20, 2007
  Fixed an error in one of the database layers which 
  affected the shapefile package (cm_shape.zip) and digital 
  dataset (cm_db.zip). 

  December 11, 2007
  Initial release online at
  http://pubs.usgs.gov/sim/2007/2977/