Soft Butter Cookies
["2 c. butter or margarine", "3 c. xxxx sugar", "2 eggs", "1 tsp. vanilla", "1 1/4 qt. (5 c.) all-purpose flour", "2 tsp. soda", "2 tsp. cream of tartar", "1/2 tsp. salt"]
["Cream butter and sugar until fluffy.", "Add unbeaten eggs and vanilla.", "Beat well.", "Sift together dry ingredients.", "Blend into creamed mixture.", "Chill.", "Roll on floured board and cut.", "Bake at 400\u00b0 for 6 minutes."]
["butter", "xxxx sugar", "eggs", "vanilla", "flour", "soda", "cream of tartar", "salt"]