Issue #49 Jun 01, 1981 Issue #50 Jul 01, 1981 Issue #51 Apr 14, 1981 Issue #52 May 12, 1981 Issue #53 Jun 16, 1981 Issue #54 Jul 14, 1981 Issue #55 Sep 10, 1981 Issue #56 Sep 22, 1981 Issue #57 Oct 20, 1981 Issue #58 Nov 17, 1981 Issue #59 Dec 22, 1981 Issue #60 Jan 19, 1982 Issue #61 Mar 11, 1982 Issue #62 Apr 15, 1982 Issue #63 May 13, 1982 Issue #64 May 18, 1982 Issue #65 Jun 15, 1982 Issue #66 Jul 20, 1982 Issue #67 Aug 31, 1982 Issue #68 Oct 05, 1982