Folder 1: Letters to Harris, mostly congratulating him on reaching his 90th birthday.Correspondents include: Sir Adrian Boult, Laurence Bowen, Sir John Dykes Bower, Sir Ernest Bullock, Sidney Campbell, Sir Keith Faulkner, Douglas Fox, Rosalind Fynes-Clinton, Richard G. Greening, Herbert Howells, Francis Jackson, Gordon Jacob, Sir Alan Lascelles, Mary Ley (widow of Sir Henry), Richard Seal, Herbert Sumsion, Alwyn Surplice and Gilbert Thurlow; telegrams from H.M. Queen…