aside. Sift flour, soda, salt and set aside. Beat butter until creamy at low speed with mixer. Gradually add sugars and beat until light and fluffy. Add eggs, one at a time, beating, well beaten each addition. Add vanilla. Use a 1/4 cup measuring cup to form cookies. Pack dough into cup so it is even. Drop on baking sheets leaving 3 inches between cookies. Flatten dough slightly. Bake on center rack of preheated 300 degree oven for 20-25 minutes or until light brown or edges but slightly, soft in center. Cool 3-5 minutes in pan and then transfer to wire racks to cool. 2 dozen.