Issue #53 Jan 20, 1981 Issue #54 Feb 24, 1981 Issue #55 Mar 24, 1981 Issue #56 Apr 21, 1981 Issue #57 May 19, 1981 Issue #58 Jun 16, 1981 Issue #59 Jul 21, 1981 Issue #60 Aug 18, 1981 Issue #61 Sep 15, 1981 Issue #62 Oct 20, 1981 Issue #63 Nov 17, 1981 Issue #64 Dec 15, 1981 Issue #65 Jan 19, 1982 Issue #66 Feb 16, 1982 Issue #67 Mar 16, 1982 Issue #68 Apr 13, 1982 Issue #69 May 18, 1982 Issue #70 Jun 15, 1982 Issue #71 Jul 13, 1982 Issue #72 Aug 17, 1982