File 1: 39 carbon typed letters to F.W.B. and 32 autograph letters signed from F.W.B. Also 1 carbon typed letter to Mrs J. Bateson and 1 autograph letter signed from Mrs J. Bateson and . Many letters relate to the Cambridge Bibliography of English Literature. I (77 items).
File 2: 83 carbon typed letters to F.W.B. and 33 autograph letters signed from F.W.B. Includes 1 autograph letter signed from Norman Ault to F.W.B. and 1 autograph letter signed from Graham Pollard to F.W.B. (126 items).
File 3: 33 carbon typed letters to F.W.B. and 18 autograph letters signed from F.W.B. Includes 1 typed letter signed from Michael Sadleir to Brooke Crutchley, 1 carbon typed letter from Brooke Crutchley to Michael Sadleir, and 1 typed letter signed from S.C. Roberts to F.W.B. (56 items).