William J. Mueller, age 95, beloved husband of the late Henrietta \"Penny\", nee Stahl;  dear father  of Richard and the late Barbara and William Jr.; fond grandfather of Joseph (Kristin) Fedoruk and Christopher; great-grandfather of Melina.  Visitation Sunday 4 to 8 p.m. at Michalik Funeral Home, 1056 W. Chicago Ave., Chicago.  Family and friends will gather Monday at St. Louise De Marillac Church,  1144 Harrison Ave., La Grange Park for Mass at 9:30 a.m.  Interment St. Joseph Cemetery, River Grove.  For information 312-421-0936.