Issue #258 Jan 11, 1977 Issue #259 Feb 08, 1977 Issue #260 Mar 08, 1977 Issue #261 Apr 12, 1977 Issue #262 May 10, 1977 Issue #263 Jun 07, 1977 Issue #264 Jul 12, 1977 Issue #265 Aug 10, 1977 Issue #266 Sep 13, 1977 Issue #267 Oct 11, 1977 Issue #268 Nov 08, 1977 Issue #269 Dec 13, 1977 Issue #270 Jan 10, 1978 Issue #271 Feb 07, 1978 Issue #272 Mar 14, 1978 Issue #273 Apr 11, 1978 Issue #274 May 09, 1978 Issue #275 Jun 20, 1978 Issue #276 Jul 18, 1978 Issue #277 Aug 15, 1978