The collection consists of the drafts, typescripts and related material of some of the later books written by Sir Keith Hancock, particularly his biography of General J.C. Smuts. The material related to the Smuts biography includes copies of letters by General Smuts and Sir Keith's correspondence with various people while collecting material for the book. Correspondents include Lord Trenchard, Professor P.G. H. Boswell, Piet Beukes, Sir Dougal Malcolm, Professor D.W. Kruger, Dr W.J. de Kock, Professor K. Kirkwood, Lord Reith, Alan Paton, Mrs M.C. Gillett, Professor L.W. Thompson, V.C.H.R. Brereton, Lord Brand, J.C. Smuts and Clark Bancroft.