Papers of the Sykes family of Sledmere > Papers of Sir Mark Sykes (1879-1919) (Second deposit of Papers of the Sykes family) > Correspondence > File. General correspondence, letters and telegrams to Mark Sykes > Letter from J.M.W. Mason, Secretary, North Eastern Railway, Railway Institute, Queen Street, York, asking if he is available for a date in March to give a lecture. ('Regret Unable' pencilled at the top.)