Sour Cream Sugar Cookies

1/2 tsp baking powder 4 1/2 cups flour 1 ts salt 1 tsp soda 1 2/3 C. sugar 1 C. sour cream 2 eggs 1 tsp vanilla 1 C butter - soft Cream butter, add sugar - cream well. Add eggs and blend. Sift salt, soda, baking powder with flour and add alternately with sour cream to sugar mixture. Chill 2 hours. Roll out with flour to 1/4" thick. Cut - Bake 350 degrees on lightly greased cookie sheet…