Issue #51 Sep 07, 1976 Issue #52 Jan 31, 1977 Issue #53 Nov 02, 1976 Issue #54 Nov 30, 1976 Issue #55 Jan 04, 1977 Issue #56 Feb 01, 1977 Issue #57 Mar 11, 1977 Issue #58 Apr 05, 1977 Issue #59 May 03, 1977 Issue #60 May 31, 1977 Issue #61 Aug 03, 1977 Issue #62 Oct 04, 1977 Issue #63 Dec 06, 1977 Issue #64 Feb 02, 1978 Issue #65 Apr 04, 1978 Issue #66 Sep 30, 1978 Issue #67 Nov 30, 1978 Issue #68 Feb 01, 1979 Issue #69 Apr 30, 1979 Issue #70 Aug 01, 1979