Sugar Cookies

1 c. margarine
1 1/2 c. sugar
3 eggs
1 tsp. vanilla
3 1/2 c. flour
2 tsp. cream of tartar
1 tsp. soda
1/2 tsp. salt

Cream butter. Add sugar, gradually, creaming until light and fluffy. Add eggs, one at a time, beating after each addition. Stir in vanilla. Add dry ingredients gradually to creamed mixture.

Chill thoroughly. Roll on floured surface and cut in shapes. Bake on ungreased cookie sheet at 375 degrees for 6-8 minutes.