Sift flour with baking powder and salt. Cream butter and sugar. Mix in eggs. Alternately add flour mixture and milk, stirring constantly. Mix in nuts and lemon peel. Bake in greased 5x9" loaf pan for about 50 minutes or until done when tested. Bake at 350.
As soon as bread comes out of oven, poke holes in the top with fork and spoon over the topping of sugar and lemon juice.
Note: Mix the topping just prior to use or it will not be smooth.