Frozen Lemon Dessert

Yield:	6 Servings
Categories:	Desserts, Frozen

16		Graham crackers; finely crushed
1/4	c	Sugar
1/4	c	Butter; softened
2		Egg yolks
1		Egg
1/2	c	Sugar
1/4	c	Lemon juice
1/4	ts	Salt
1	c	Heavy cream; whipped
2	ts	Lemon rind grated
1	ts	Vanilla