The Slater Area Historical Association will announce the winner of the Slater City Flag Contest at 3 p.m. on Sunday, Dec. 1, at the Slater Fire Station, Main Street, during the “Christmas on Main” event. Prizes will be awarded and flags will be for sale. There will be an exhibit of all the entries at the station and flags will be presented to the city and the contest winner. The exhibit will be on display during December at Heritage Hall, 318 First Ave., Slater. Hours open are 10 a.m. - 2 p.m. on Thursdays, or call 515-480-9789 or 515-228-3293 for an appointment.