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, A-H > Letter. Egerton Beck, Editor, The Expert: illustrated weekly paper for collectors and connoisseurs, 1 Albermarle Street, Piccadilly, London to Mark Sykes