Issue #1 Jun 29, 1961 Issue #2 Nov 16, 1961 Issue #3 Jun 19, 1962 Issue #4 Nov 08, 1962 Issue #5 May 23, 1963 Issue #6 Nov 14, 1963 Issue #7 May 28, 1964 Issue #8 Jun 22, 1982 Issue #9 Apr 11, 1985 Issue #10 May 22, 1986 Issue #11 Apr 07, 1987 Issue #12 Apr 26, 1988 Issue #13 Apr 11, 1989 Issue #14 May 29, 1990 Issue #15 Apr 11, 1991 Issue #16 Aug 27, 1992 Issue #17 Jul 08, 1993 Issue #18 May 03, 1994 Issue #19 Jul 27, 1995 Issue #20 May 15, 1996