All Tucson singles are invited to help celebrate the Singletarians' 40th anniversary at a dinner-dance from 1 to 5 p.m., Sunday, Oct. 9. The event includes live entertainment. $30 dinner and dance; $15 at 2:30 p.m. for dance only. Reservations are by check to 9855 E. Irvington Road, No. 220, Tucson, 85730; or call 722-9341.