Dean L. Folker, 84, of Keosauqua, died Wednesday, May 13, 2009, at University of Iowa Hospitals and Clinics in Iowa City.A memorial service will be at 10:30 a.m. Saturday at Keosauqua Congregational Church, with the Rev. Harold Schnedler officiating. Burial of cremains will be in Purdom Cemetery in Keosauqua.Memorials to Friends of Lacey or Keosauqua Congregational Church may be brought to the service or may be