Issue #1 May 19, 1970 Issue #2 Jul 07, 1970 Issue #3 Sep 01, 1970 Issue #4 Nov 10, 1970 Issue #5 Feb 09, 1971 Issue #6 May 11, 1971 Issue #7 Aug 17, 1971 Issue #8 Nov 02, 1971 Issue #9 Feb 08, 1972 Issue #10 Apr 04, 1972 Issue #11 Jun 06, 1972 Issue #12 Aug 01, 1972 Issue #13 Oct 03, 1972 Issue #14 Nov 28, 1972 Issue #15 Feb 06, 1973 Issue #16 Apr 03, 1973 Issue #17 Jun 05, 1973 Issue #18 Jul 03, 1973 Issue #19 Jul 31, 1973 Issue #20 Sep 25, 1973