Issue #490 Mar 31, 1992 Issue #491 Apr 28, 1992 Issue #492 May 26, 1992 Issue #493 Jun 30, 1992 Issue #494 Jul 28, 1992 Issue #495 Aug 25, 1992 Issue #496 Sep 29, 1992 Issue #497 Oct 27, 1992 Issue #498 Nov 24, 1992 Issue #499 Dec 29, 1992 Issue #500 Apr 15, 1993 Issue #501 Apr 27, 1993 Issue #502 Jun 02, 1993 Issue #503 Jun 29, 1993 Issue #504 Jul 27, 1993 Issue #505 Aug 31, 1993 Issue #506 Sep 29, 1993 Issue #507 Oct 26, 1993 Issue #508 Dec 01, 1993 Issue #509 Dec 28, 1993