Foreign Associate-ship of the National Academy of Sciences of the United States of America Certificate electing Kosterlitz a foreign associate of the National Academy of Sciences of the United States of America, 23 April 1985. Correspondence with the National Academy of Sciences, including letters and telegrams regarding Kosterlitz's election as a foreign associate, April - July 1985, with general and circular papers and correspondence of the Academy, 1985 - 1994. The file also contains brief correspondence regarding Kosterlitz's review of a paper by R. Maurer et. al., for 'Proceedings of the National Academy of Sciences, USA', February - April 1982. 1982 - 1994