Issue #1 Jan 28, 1976 Issue #2 Jan 28, 1976 Issue #3 Feb 25, 1976 Issue #4 Feb 25, 1976 Issue #5 Apr 28, 1976 Issue #6 Sep 30, 1976 Issue #7 Mar 30, 1977 Issue #8 Oct 31, 1977 Issue #9 Mar 29, 1979 Issue #10 Apr 26, 1979 Issue #11 Sep 27, 1979 Issue #12 Oct 30, 1979 Issue #13 May 28, 1980 Issue #14 Dec 23, 1980 Issue #15 Jul 28, 1981 Issue #16 Jun 28, 1982 Issue #17 Aug 27, 1982 Issue #18 Nov 30, 1984 Issue #19 Dec 17, 1984 Issue #20 Sep 30, 1985