Issue #51 Oct 25, 1973 Issue #52 Dec 20, 1973 Issue #53 Feb 21, 1974 Issue #54 Apr 18, 1974 Issue #55 Jul 01, 1974 Issue #56 Aug 01, 1974 Issue #57 Aug 22, 1974 Issue #58 Dec 01, 1974 Issue #59 Dec 19, 1974 Issue #60 Issue #61 Apr 17, 1975 Issue #62 Jul 01, 1975 Issue #63 Jun 19, 1975 Issue #64 Aug 21, 1975 Issue #65 Oct 08, 1975 Issue #66 Feb 01, 1976 Issue #67 Feb 19, 1976 Issue #68 Issue #69 Aug 01, 1976 Issue #70 Jul 15, 1976