Funeral services for Clarence Engstrom, 64, of Marshalltown and formerly Knoxville, will be held Tuesday, December 4 at the Bybee & Davis Funeral Home at 1:00 p.m. Burial with Military Honors will follow in the Graceland Cemetery. In lieu of flowers, memorial contributions may be made to the Marion County Humane Society, the Knoxville High School Science Department or Dollars for Scholars. Online condolences may be left at BertrandFuneralHomes.com.