Issue #1 Jul 31, 1974 Issue #2 Aug 26, 1974 Issue #3 Sep 30, 1974 Issue #4 Oct 31, 1974 Issue #5 Nov 28, 1974 Issue #6 Dec 25, 1974 Issue #7 May 02, 1975 Issue #8 Jul 01, 1975 Issue #9 Nov 01, 1975 Issue #10 Apr 25, 1976 Issue #11 Jun 30, 1976 Issue #12 Nov 27, 1976 Issue #13 Mar 31, 1977 Issue #14 Dec 20, 1977 Issue #15 Jun 27, 1978 Issue #16 Dec 22, 1978 Issue #17 Jun 27, 1979 Issue #18 Dec 20, 1979 Issue #19 Jun 28, 1980 Issue #20 Dec 20, 1980