Issue #23 Feb 01, 1973 Issue #24 Apr 01, 1973 Issue #25 Jun 01, 1973 Issue #26 Aug 01, 1973 Issue #27 Oct 01, 1973 Issue #28 Dec 01, 1973 Issue #29 Feb 01, 1974 Issue #30 Apr 01, 1974 Issue #31 Jun 01, 1974 Issue #32 Aug 01, 1974 Issue #33 Oct 05, 1974 Issue #34 Feb 01, 1975 Issue #35 Feb 01, 1975 Issue #36 May 01, 1976 Issue #37 Aug 01, 1976 Issue #38 Nov 01, 1976 Issue #39 Apr 01, 1977 Issue #40 Aug 01, 1977 Issue #41 Nov 01, 1977 Issue #42 Feb 01, 1978