Blend graham cracker crumbs, 1/4 cup sugar and butter together. Press crumbs on side and bottom of well-greased 10-inch springform pan.

Filling: Mix cream cheese and 1 1/2 cups sugar for 3 to 5 minutes. Add eggs and 1 teaspoon vanilla. Beat the entire mixture for 30 minutes. Bake at 300° for 50 to 60 minutes. Remove from oven and cool at room temperature for 20 minutes.

Topping: Blend sour cream, 1/4 cup sugar and 1 teaspoon vanilla together. Pour on top of slightly cooled cheese- cake, return to oven for 10 more minutes.