In lieu of flowers, memorials may be made to the Leukemia Foundation. Grassmuck, Donald A., of Lake St. Louis, Missouri, died on Thursday, July 3, 2008 at the age of 72. Devoted husband of 51 years to Joan Grassmuck, dear son of the late John Frank Grassmuck and the late Bernice Edna Grassmuck, loving father of Michael (Patrica) Grassmuck, Stephen (Judy) Grassmuck, William (Sandra) Grassmuck and Laura (Dave) Scissors, cherished grandfather of Daniel, Richard, Amanda, Erica, Rachael, Zachary, Sara, and Lindsay, dear brother of Jacklyn Patton, dear uncle and friend to many. He is preceded in death by Berenice Bell, Sister. He was owner and operator of Planet Tool and Engineering, founded in 1965, where he worked as an engineer. He enjoyed boating and fishing and being on the water.