Saline County Authorities are asking for your help in finding 50-year-old Roberta Wallace, who has been reported missing by her family. According to a report from the Harrisburg Police Department, Wallace, who is mentally disabled, was last seen on July 19th leaving the home of a friend. WSIL reports that Wallace’s family claims that this isn’t the first time she has wandered off. Wallace was last seen wearing a purple tank top and light colored blue jeans. A search party is scheduled for noon today, with volunteers meeting at the Harrisburg Medical Center.