Diekamp, Rietta B., of Troy, Missouri, died on Wednesday, July 28, 2010 at the age of 89. Devoted wife of the late Herbert A. Diekamp; beloved daughter of the late Edwin and Bernherdena Schemmer; loving cousin of Opal (Bill) Twiehaus; dear sister-in-law of Leona (Ted) Mallinckrodt, Elmer (Lorene) Diekamp, Alvera Schmidt, Evelyn Kyle and Louise (Virgil) Gravemann. Memorials may be made to Friedens United Church of Christ.