Oak Park River Forest Museum, Downtown Oak Park and Classic Cinemas are celebrating the 150th anniversary of Tarzan creator and former Oak Park resident Edgar Rice Burroughs’ birth by showing the 1984 film, “Greystoke: The Legend of Tarzan, Lord of the Apes,” at Lake Theatre Saturday, Aug. 30 at 11 a.m. The movie is based on Burroughs’ 1912 novel, “Tarzan of the Apes.” The movie, nominated for