Butterscotch Cookies

1/2 c Butter
2 c Brown sugar
2 Eggs
1/2 ts Vanilla
3 1/2 c Flour - sifted
1/2 ts Cream of tartar
1 ts Baking soda


Cream butter, add sugar and then add eggs and vanilla. Sift flour with
cream of tartar and baking soda and add to first mixture. Form into a
roll and allow to stand in ice box overnight. Slice thinly and bake on
a greased baking sheet in moderate oven (375 F) for 10 minutes.