Papers of the Sykes Family of Sledmere > PAPERS OF SIR MARK SYKES (1879 - 1919) (SECOND DEPOSIT OF PAPERS OF THE SYKES FAMILY) > Material used by Shane Leslie for his book 'Mark Sykes. His life and letters' > Typed copies of letters from Mark Sykes, made by Shane Leslie > Letter from F Wyvill The National Union of Conservative & Constitutional Associations, 19 East Parade, Leeds