Albertha J. Flatberg, 86, of Sioux Falls, died Sunday, Nov. 13, 2022 at Dougherty Hospice House, Sioux Falls. Visitation, with the family present, will be from 5-7 p.m. Sunday, Nov. 20, 2022 at George Boom Funeral Home and On-Site Crematory. Funeral service will be held at 10 a.m. Monday, Nov.