Murph's Cheesecake

We (the Strattons) got this from our neighbor, Murph, in Texas. This is the best New York style cheesecake I think we've ever had. The crust is the best part!

1 pkg graham crackers, crushed
1 1/3 cups sugar
1/2 cups of chopped nuts, optional
4 T melted butter
Mix together and press on bottom and slightly up the sides of a spring form pan.

2 8oz packages cream cheese
2 8oz cartons whipped cream cheese
2 cups sugar
1 t salt
2 pints sour cream
2 T cornstarch
6 Extra large eggs

Beat cheeses and sugar well then add other ingredients, except eggs. Add eggs one at a time. Pour into crust and bake 1 hour at 375. Turn oven off and leave cake in oven for 1 hour. No peeking except to cover with foil towards end of baking time to keep top from over browning.