ABSTRACT
‘Cautious Collaborators’ recounts the halting development of British-United States cryptanalytic collaboration from first tentative contacts and troubled arrangements through the conclusion of the Wenger-Travis agreement (1942) and the British and United States Agreement (BRUSA) of 1943. It sheds new light on the tangible results of the Abraham Sinkov mission and details the impact of Alan Turing’s United States visit on the conclusion of BRUSA.
