Event Correspondence with the National Council of Civil Liberties and Release Event correspondence relating to a proposed concert in aid of the National Council for Civil Liberties and Release. The Hall refuses to let the show go ahead. Also includes newspaper cuttings and a letter from the Musician's Union complaining about the Hall's decision and a letter from Mr Frank Mundy, the Hall's Mananger, defending the Hall's decision. 3 October 1969- 22 January 1970