Lemon Slice

22 graham crackers
1/2 c. soft butter
1/2 c. sugar
5 egg yolks
7 tbsp. flour
1/2 c. & 1 tbsp. lemon juice
1 c. & 2 tbsp. sugar
3 tbsp. water
3 egg whites
1 tsp. lemon juice
5 tbsp. sugar
1/8 tsp. lemon rind

Crush crackers and blend with sugar. Blend with butter well. Pat into 8 x 8 inch pan, reserving 1/2 cup. Bake at 375 degrees for 10 minutes. Filling: Cook in double boiler. Beat egg yolks. Add sugar and flour; mix. Add juice and water. Cook, stirring constantly, until thick. Beat about 1/2-1 minute; put filling on crust. Beat egg whites until stiff; add sugar gradually; stir in juice and rind. Put onto filling and top with reserve cracker mix. Brown about 7 minutes.