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 > Letter from T. S. Thirsk, Honourable Secretary, Pocklington Horse and Foal Show, Pocklington, acknowledging receipt of Major Sykes' subscription to the late show.