Cream Cheese Pound Cake

3 sticks butter
3 cups sugar
1/2 teaspoon salt
1 (8 ounce) package cream cheese
6 large eggs
1 1/2 teaspoon vanilla extract
3 cups sifted cake flour

Cream butter, cream cheese and sugar until light and fluffy. Add salt and vanilla. Add eggs one at a time and beat after each addition. Add flour, dividing into four additions. Pour into 10" round tube cake pan. Grease only the bottom of the pan for a smooth even cake. Bake at 325 degrees Fahrenheit for 1-1/2 hours or until done.