Snickerdoodles

1 cup butter or shortening 1 1/2 cups sugar 2 eggs 2 3/4 cups flour 2 teaspoons cream of tartar 1 teaspoons baking soda cinnamon and sugar mixed to taste Preheat oven to 400 degrees. Mix together butter and sugar until smooth, then add eggs, cream of tartar, and baking soda. Stir in flour until well mixed. Roll into balls about 1" in diameter and roll in cinnamon and sugar to coat. Place on ungreased cookie sheets and bake 8-10 minutes. Cookies are done when they are just barely browning.