Easy-Roll Sugar Cookies
["1 c. shortening", "2 sticks margarine", "2 c. sugar", "2 eggs", "2 tsp. cream of tartar", "3 tsp. vanilla", "1 tsp. salt", "2 tsp. baking soda", "4 c. flour"]
["Cream together shortening, margarine, sugar, eggs and vanilla. Add remaining dry ingredients and mix until smooth thick dough forms.", "Divide into 4 sections, wrap in plastic wrap and chill for at least 2 hours."]
["shortening", "margarine", "sugar", "eggs", "cream of tartar", "vanilla", "salt", "baking soda", "flour"]