Dorothy Helene (Hedlund) Halvorson, 81, of Great Falls, a homemaker, died Friday, June 22, 2012 at her home of natural causes. A memorial service will be held at Faith Lutheran Church, Saturday, July 7, 2012 at 11:00 a.m. Schnider Funeral Home is handling arrangements.Dorothy is survived by her husband, Milo Halvorson of Great Falls; daughters Nancy Plasterer of Great Falls, Judy Malone of New York Mills, MN and Brenda Tilleraas of Great Falls; sons Ronald Havorson and Guy Halvorson, both of Great Falls; sisters Mary Blanchard of Mesa, AZ, Dora Wickham of Brainerd, MN, Carole Soderman of Great Falls, and Janet Fromm of Brainerd, MN; 14 grandchildren; 29 great-grandchildren and one great great-grandchild.