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Books about Koplar:
Meet Me in the Lobby: The Story of Harold Koplar & the Chase Park Plaza by Candace O'Connor (May 2005)
Central States Life Insurance Company, Petitioner, v. the Koplar Company. U.S. Supreme Court Transcript of Record... by R H MCROBERTS and SAMUEL H LIBERMAN (Oct 27, 2011)
Harry Koplar VS Warner Bros Brief Signed by Jack L Jr Warner