Vanilla Wafer Crumb Crust

2 cup cooked mashed sweet potatoes 1 cup milk 2 eggs 2 tsp. salt 1 tsp. melted butter 1 tsp. grated lemon rind Beat eggs slightly, add other ingredients and place in pan which has been lined with plain pastry. Place pie pan near bottom of oven. Start it in a hot oven 450 F….