Issue #453 Aug 28, 1975 Issue #454 Sep 30, 1975 Issue #455 Oct 28, 1975 Issue #456 Nov 27, 1975 Issue #457 Dec 30, 1975 Issue #458 Jan 29, 1976 Issue #459 Feb 26, 1976 Issue #460 Mar 30, 1976 Issue #461 Apr 27, 1976 Issue #462 May 27, 1976 Issue #463 Jun 29, 1976 Issue #464 Jul 26, 1976 Issue #465 Aug 31, 1976 Issue #466 Sep 30, 1976 Issue #467 Oct 28, 1976 Issue #468 Dec 28, 1976 Issue #469 Feb 22, 1977 Issue #470 Mar 29, 1977 Issue #471 May 31, 1977 Issue #472 Jun 30, 1977