A Celebration of Life service for David M. Olson, Sr., 79, of Panora, will be held at a later date. Burial will be in Elk Horn, Iowa. Survivors include: Wife, Linda. Children, Laurie Vollertsen of Lincoln, Nebraska, Lyn Nicks of Denver, Colorado, Lisa Callahan of Gretna, Nebraska and David M. Olson, Jr., of Denver, Colorado. 1 step daughter, Michelle Schmith or Ames. 4 grandchildren and 2 great grandchildren. Siblings, Danny Olson of Leon and Dee Christensen of Missouri Valley.