Issues are:
Dec 1973 Mar 1973 Feb 1971 Apr 1970 Jun 1970 Jun 1971 Dec 1970 Oct 1970
Apr 1972 Apr 1965 Apr 1968 Aug 1972 Autumn 1965 Dec 1967 Dec 1965 Dec 1972
Feb 1972 Feb 1966 (4 pages) Jan 1969 Jul 1970 Jul 1967 Jul 1971 Jun 1968 Jun 1969
Apr 1967Apr 1971 Jun 1967 May 1966 Summer 1966 Nov 1968 Nov 1971 Oct 1966
Nov 1969Sep 1967 Sep 1971 Spring 1969 Summer 1965
Here are a few covers.