Darlington submitted to the NATO Science Division an application for funds to support the Symposium on the Evolution of Man and Society, 15 May 1963. On 25 June 1963 he wrote to those provisionally invited to the symposium that after five weeks' discussion he had to withdraw the application since it appeared, contrary to what he had been led to suppose, that the scope of his proposal was too wide and the cost too great for their scheme. Material comprises outline programme, lists of possible contributors and copy of Darlington's letter of 25 June 1963.