Letter, 9 November 1928, Surrey, Robert Trevelyan to Charles Ricketts. Agreeing to pay Ricketts three hundred pounds for his work on the ' Bride of Dionysus' sets. Holograph unfinished.

Letter, 29 January 1929, Surrey, Robert Trevelyan to Charles Guthrie Esq.. Discussion of the performance of the opera and the financial and legal considerations. Typescript copy.

Letter, 11 July 1940, Surrey, Robert Trevelyan to Clara Tovey. Expressing grief and sympathy after the death of Tovey. Holograph signed, with envelope.

Letter, 27 September 1950, Surrey, Ralph Vaughan Williams to Mary Grierson. Explaining the reasons that Vaughan Williams asked Tovey for advice, informing Grierson of Tovey's comments when Vaughan Williams suggested Grierson should succeed him as Professor at Edinburgh. Typescript signed, with stamped envelope.

Letter, 11 October 1950, Surrey, Ralph Vaughan Williams to Mary Grierson. Expressing the hope that Grierson will describe Tovey's help to Vaughan Williams. Typescript signed, with stamped envelope.

Letter, 28 February [n.y], Surrey, Ralph Vaughan Williams to Mary Grierson. Praising Grierson's book and pointing out an error concerning Mona Benson. Holograph signed, with envelope.

Letter, 17 April 1910, Dorking, Donald Tovey to Edward Speyer. Suggestions for concert programme. Holograph signed, in pencil.

Letter, [n.d], William Strecker to Robert Trevelyan. Thanking Trevelyan for writing, discussion of Tovey's completion of the opera, offering help with the production of the opera, news that Strecker is tired of his imprisonment. Holograph signed, written on German Prisoner of War notepaper, with a postmark, Alexandra Palace.

Letter, [1911], Surrey, Elizabeth Trevelyan to Donald Tovey. Asking Tovey to stop burdening Robert Trevelyan with work, as he is becoming anxious and overworked. Holograph signed.

Letter, 4 July [1913], Surrey, Elizabeth Trevelyan to Donald Tovey. Requesting that Tovey take Robert Trevelyan into his confidence, and elucidate his plans for the opera. Holograph signed.