Sour Cream Sugar Cookies

1 1/2 C sugar
1/2 C butter
2 eggs
1 C sour cream
2 tsp vanilla
5 C flour
2 tsp baking powder
1 tsp baking soda
1 tsp salt

Cream sugar and butter.  Add eggs, sour cream and vanilla and beat well.  Mix in dry ingredients.
Refrigerate for at least 1 hour.
Preheat oven to 350 degrees.
Roll out dough to 1/4 inch thick using plenty of flour.  Don't overwork the dough, or cookies will be tough.  Cut out cookies with cookie cutters.
Bake 7-8 minutes.  Cookies are done if you touch one and it doesn't leave a finger mark.  They will still be white on top.  If you see any brown at all the cookies are done.
Let cool for 2 minutes then transfer to cooling rack.

from Bernice Oliver
I got this recipe from a ward cook book I bought at a Relief Society bazaar when I was 8.