Combine flour, baking powder, add salt; add to creamed mixture alternately with milk, beginning and ending with flour mixture. Stir in lemon rind.

Pour batter into 2 greased and floured 9-inch round cake pans. Bake at 350 degrees for 25-30 minutes or until a wooden pick is inserted in center comes out clean. Cool in pans 10 minutes; remove layers form pans, and let cool completely.