Papers of the Sykes family of Sledmere > Papers of Sir Mark Sykes (1879-1919) (Second deposit of Papers of the Sykes family) > Correspondence > File of general correspondence. Letters and telegrams to Mark Sykes, including one letter from Winston Churchill > Letter from Philip Burtt, York enclosing details of the Agricultural Organisation Society (North Eastern Section) and asking Sykes to be a Vice President, and to subscribe £10 annually (9 items)