July 5, 1947 December 13, 1947 May 15, 1948 January 15, 1949 March 5, 1949 April 30, 1949 August 23, 1952 August 30, 1952 September 6, 1952 September 13, 1952 September 20, 1952 September 27, 1952 October 4, 1952