Correspondents include: Maurice Ashley, WSC's researcher on the revision and correction of proofs (5); Shane Leslie; representatives of George G Harrap and Company, including George Harrap himself (4) on the dispatch and reception of proofs; John Swain and Sons Limited on the preparation of maps (5); Esmond Harmsworth [later 2nd Lord Rothermere]; Gordon Halswell; [Ridley] Pakenham-Walsh on the correction of proofs and notes on a campaign by General Turenne (6); Keith Feiling (6); George Trevelyan; Sir John Eaglesome; Lord Ivor Churchill; J L Garvin; [Albert, 7th Lord] Spencer; William Hadley, editor of the Sunday Times; Trevor O'Connor and Herbert Fisher (2).Includes copies of letters from WSC to the individuals mentioned above and to Charles, 9th Duke of Marlborough and Alfred Duff Cooper [later 1st Lord Norwich].Also includes material on the preparation of illustrations for the book and letters reacting to the instalments of "Marlborough" which appeared in the Sunday Times.