Issue #18 Sep 14, 1967 Issue #19 Nov 30, 1967 Issue #20 Feb 16, 1968 Issue #21 Apr 11, 1968 Issue #22 May 23, 1968 Issue #23 Jul 11, 1968 Issue #24 Sep 12, 1968 Issue #25 Nov 05, 1968 Issue #26 Jan 07, 1969 Issue #27 Apr 10, 1969 Issue #28 Jun 17, 1969 Issue #29 Jul 01, 1969 Issue #30 Aug 28, 1969 Issue #31 Nov 11, 1969 Issue #32 Jan 13, 1970 Issue #33 Mar 10, 1970 Issue #34 Apr 23, 1970 Issue #35 Jul 07, 1970 Issue #36 Aug 18, 1970 Issue #37 Oct 22, 1970