Rolled Butterscotch Cookies
["3 c. sifted flour", "1/2 tsp. salt", "1 1/4 c. brown sugar", "1 1/2 tsp. vanilla", "2 1/4 tsp. baking powder", "3/4 c. butter", "2 eggs (unbeaten)", "1 1/2 tsp. lemon juice"]
["Sift flour once; measure. Add baking powder and salt and sift again. Cream butter thoroughly. Add sugar gradually and cream together until light and fluffy. Add eggs and beat well. Add vanilla and lemon juice, then add flour, mixing well. Chill until firm enough to roll. Roll 1/8-inch thick on slightly floured board. Cut with floured cutter. Bake on ungreased baking sheet at 425\u00b0 for 5 to 6 minutes."]
["flour", "salt", "brown sugar", "vanilla", "baking powder", "butter", "eggs", "lemon juice"]