Cream Cheese Pound Cake
["1 stick butter", "2 sticks margarine", "1 (8 oz.) cream cheese", "3 c. plain flour, sifted", "6 large eggs", "1 1/2 tsp. vanilla", "3 c. sugar", "1/2 tsp. salt"]
["Cream butter, margarine, cream cheese and sugar until thoroughly creamed. Add vanilla and salt; alternate eggs and flour. Beat until well blended. Bake in a lightly greased and floured tube pan at 300\u00b0 for 1 1/2 hours."]
["butter", "margarine", "cream cheese", "flour", "eggs", "vanilla", "sugar", "salt"]