Cheesecake a La Chase-Park Plaza

1 Graham cracker crust

2 lb Cream cheese

1 1/2 c Sugar

4 lg Eggs

1 t Vanilla

1/3 ts Orange rind

1/3 ts Lemon rind

1/3 c Egg whites

Line an 8 inch springforn pan with a graham cracker crust. Chill slightly. Cream together, cream cheese and sugar. Beat in eggs one at a time. Add vanilla, orange and lemon rinds. Fold in stiffly beaten egg whites. Pour into crust. Bake in a preheated oven at 230`F. for 2 hours and 40 minutes