Letter, 24 May 1929, Edinburgh, Charles Guthrie to Robert Trevelyan. Concerning the finances of ' The Bride of Dionysus'. Typescript signed.

Letter, 15 March 1929, Edinburgh, Charles Guthrie to Robert Trevelyan. Enclosing a new agreement, thanking Trevelyan for a cheque and details of the costs of properties for the opera. Typescript signed.

Letter, 14 June 1929, Edinburgh, Charles Guthrie to Robert Trevelyan. Concerning the finances of the 'Bride of Dionysus' and expressing pleasure at having been involved with the production. Holograph signed.

Letter, 28 November 1945, London, Norman Peterkin to Robert Trevelyan. Expressing Hubert Foss's worries about printing Tovey's essay, 'Music in German Culture', 1914, because of its views on the war and Nazism. Typescript signed.

Letter, 14 December 1945, London, Norman Peterkin to Robert Trevelyan. Concerning material for a biography of Tovey and a meeting with Peterkin, Grierson, Guthrie, Foss and John Tovey. Typescript signed.

Letter, 27 January 1945, London, Norman Peterkin to Robert Trevelyan. Concerning a meeting with Grierson to discuss the biography of Tovey. Typescript signed.

Letter, 19 December 1946, London, Norman Peterkin to Robert Trevelyan. Discussing the production of a Tovey biography by either Foss or Grierson. Typescript signed.

Letter, 1 February 1947, London, Norman Peterkin to Robert Trevelyan. Informing Trevelyan that Grierson is dedicating time to writing a biography on Tovey and that John Tovey has offered her financial help and that Oxford University Press have offered assistance. Typescript signed.

Letter, [1910], Surrey, Donald Tovey to Robert Trevelyan. Consoling Trevelyan after the death of Mr. Dakyns. Ms. transcript by Hubert Foss.

Letter, 6 May 1929, Edinburgh, Charles Guthrie to Donald Tovey. Discussing finances of ' The Bride of Dionysus'. Typescript signed.