Summer 1989 Spring 1989 Winter 1987 Fall 1987 Spring 1987 October/November 1986 May 1986 February 1986 June 1985 April 1985 September 1984 June 1984 November 1983 March 1982 November 1981 November 1980 April 1979 July 1978 March 1978 January 1978 July/August 1977 – 2 July/August 1977 June 1977 March 1977 December 1976 November 1976 September 1976 July/August 1976 April 1976 March 1976 February 1976 January 1976 September 1975 July 1975 June 1975 March 1975 Feb 1975 January 1975 December 1974 November 1974 September 1974 June 1974 May 1974 April 1974 October 1973
