Issue #48 Jun 22, 1949 Issue #49 Aug 26, 1949 Issue #50 Oct 26, 1949 Issue #51 Dec 07, 1949 Issue #52 Feb 22, 1950 Issue #53 Apr 21, 1950 Issue #54 Jun 23, 1950 Issue #55 Aug 23, 1950 Issue #56 Oct 20, 1950 Issue #57 Mar 01, 1951 Issue #58 Feb 29, 1976 Issue #59 Apr 25, 1951 Issue #60 Jun 30, 1976 Issue #61 Aug 31, 1976 Issue #62 Oct 31, 1976 Issue #63 Dec 31, 1976 Issue #64 Feb 28, 1977 Issue #65 Apr 30, 1977 Issue #66 Jun 30, 1977 Issue #67 Aug 31, 1977