Combine crushed graham crackers, sugar and melted butter.
Pat in 9x13 inch pan.
First Filling:
Mix eggs, cream cheese and 1 1/2 cups sugar.
Pour over graham cracker crust.
Bake for 20 min. at 350 degrees.
Second Filling:
Cook pumpkin, egg yolks, 1/2 cup sugar, cinnamon and salt over low heat until creamy. Remove from heat and add 1 envelope plain gelatin that has been totally dissolved in cold water. Cool well.
Beat 3 egg whites with 1/4 cup powdered sugar. Fold into pumpkin mixture. Pour over cream cheese layer and cool.