Thatcher (Margaret) Autograph letter signed ('Margaret Thatcher') to Mr Tyson, reading "The result of this election has been both a historic achievement for our Party and a confirmation of the soundness of our policies. Thank you for everything you did to make our local campaign such a success. We have never had better organisation and the spirit was truly wonderful", one page, mid-horizontal mailing fold, some creasing, 8vo, 10 Downing Street, 13 June 1987.