Isabelle M. Christopherson, 90, Rapid City, died at Fountain Springs Health Care on Sunday, July 19, 2009. Survivors include two daughters; Faye Rick, Rapid City, and Katherine Pierce, Fossil, Oregon, one brother; two sisters; three grandchildren, Deb Curns, Mike Dries and Jason Dries; three great grandchildren and four great-great grandchildren. She was preceded in death by her husband Elmer, 1 grandson, Christopher R. Dries, 1 great grandson, Christopher M. Dries and a son-in-law, Don Rick. A private family memorial service will be held at Pine Lawn Memorial Park in Rapid City. An online guestbook is available at www.osheimschmidt.com.