Issue #1 Oct 10, 1972 Issue #2 Dec 05, 1972 Issue #3 Feb 13, 1973 Issue #4 Apr 10, 1973 Issue #5 Jun 12, 1973 Issue #6 Oct 01, 1973 Issue #7 Aug 07, 1973 Issue #8 Oct 02, 1973 Issue #9 Nov 27, 1973 Issue #10 Feb 05, 1974 Issue #11 Apr 09, 1974 Issue #12 Jun 11, 1974 Issue #13 Jul 09, 1974 Issue #14 Aug 13, 1974 Issue #15 Oct 10, 1974 Issue #16 Dec 10, 1974 Issue #17 Feb 11, 1975 Issue #18 Apr 08, 1974 Issue #19 Jun 10, 1975 Issue #20 Jul 08, 1975