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, inviting Colonel Sykes to subscribe to their late show.