Memorials may be given to Masses or American Cancer Society at any of the Baue Funeral Home locations. RIDDER, Dean F., St. Peters, Missouri, May 20, 2002, age 64. Dear husband of Barbara A. Ridder; dear son of the late Anton & Mary Ridder; dear brother of Mary Ann Burtwistle (O.B. ''Pete''), Norma Jean Locke (Robert), and the late Henry ''Hank'' Ridder. Survived by aunts, uncles, nieces and nephews.