A file of correspondence covering arrangements for the possible defection of Czechoslovakian citizens, including Edvard Beneš and Dr Petr Zenkl. Documents include a list of prominent potential defectors; instructions to frontier guards and embassy staff for dealing with defectors; discussions of the potential security risks posed by defectors; detailed reports on the condition and prospects for defection of Beneš and Zenkl; a report of the arrest of a British agent in Czechoslovakia; and a memorandum on sources of Uranium within Czechoslovakia.