Funeral services for 99 year old Rosye Mae Preston of Muscatine will be at 10:00 Saturday at the George M. Wittich-Lewis Home for Funeral and Cremation Services.  Burial will take place in the Greenwood Cemetery.  Visitation will be held Friday from 4:00 to 7:00 p.m. at the George M. Wittich-Lewis Home for Funeral and Cremation Services.