Amish cookies #2

1 c  Sugar
      1 c  Powdered sugar
      1 c  butter
      1 c  Corn oil
      2 lg Eggs
      1 ts vanilla extract
  4 1/2 c  All-purpose flour
      1 ts Cream of tartar
      1 ts Baking soda
      1 ts Salt
 
  Beat first 6 ingredients together well. Sift remaining ingredients
  together; add to first mixture, and blend well.
   Shape dough into small balls. Flatten with a glass dipped in sugar. Place
  on ungreased cookie sheets.  Bake at 375 degrees for 8 minutes (check
  before that, so they don't overbake). Makes about 8 dozen.
 
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