Bi-Fold, Division of Investigation U.S. Department of Justice - addressed to Chief of Detectives Chicago Police Department. Circa: July 23rd, 1934 Dimensions: 8 x 8 inches 2x Lake County motor company Ford V8 advertisements sent to Melvin Purvis as Melvin was chief of detectives in Chicago at that time. The advertisement is from the Ford Dealership in Crown Point where the car was actually purchased. Dimensions: 5" x 7" Processing and shipping within the continental U.S $30 plus a 1.5% replacement cost insurance fee. Discounts given on combined lot shipping.