1 c  Butter

  1 1/8 c  Sugar

      2 c  Flour; enriched - sifted

      1 ts Ammonia salt

      1 ts Vanilla

      Cream the butter; add sugar and cream thoroughly, using an electric
  beater if possible.
      Beat in the sifted flour, ammonia salt, and vanilla.
      Put in refrigerator for a few hours, then shape into small balls and
  bake in a slow oven (300 F). Source: Mary Margaret McBride Encyclopedia of
  Cooking (c) 1958, Homemakers Research Institute, Evanston, Il.