A Funeral Mass for Joyce Lettenberger will be held at 11 a.m. on Saturday, August 12, 2017, at St. Mathias Church. Visitation will be held from 9 until 11 a.m. on Saturday, August 12, 2017, at Gannon Hall. A time of food and fellowship at Gannon Hall will follow the funeral mass. There will be a private burial at St. Mary’s Cemetery. Memorials may be made to the Jean Lettenberger Annual Scholarship Fund which benefits a swimmer on the Muscatine High School girls swim team. The Ralph J. Wittich-Riley-Freers Funeral Home will be in charge of arrangements. Online Condolences: www.wittichfuneralhome.com