Issue #1 Jun 18, 1974 Issue #2 Sep 17, 1974 Issue #3 Jan 01, 1974 Issue #4 Jun 01, 1975 Issue #5 Mar 13, 1975 Issue #6 Jan 01, 1975 Issue #7 Jul 22, 1975 Issue #8 Issue #9 Jan 01, 1976 Issue #10 May 18, 1976 Issue #11 Jan 01, 1976 Issue #12 Oct 05, 1976 Issue #13 Jan 01, 1976 Issue #14 Jan 01, 1977 Issue #15 May 31, 1977 Issue #16 Feb 14, 1978 Issue #17 Apr 04, 1978 Issue #18 Aug 01, 1978 Issue #19 Oct 17, 1978 Issue #20 Jan 30, 1979