Incomplete autograph manuscript, 1916-1928, by Josef Charles Holbrooke of his three-act opera Bronwen (op. 75), being the third and final part of his operatic trilogy The Cauldron of Annwn; Act I is lacking. The libretto, based on the narratives of The Four Branches of the Mabinogi, was written by Holbrooke's patron, Thomas Evelyn Scott-Ellis, eighth baron Howard de Walden.
Mostly composed at Harlech, the work was completed in parts, the Overture (MS 23863F) (published as a piano arrangement in 1917), here dated July 1916 (p. 17); Act II (MS 23864F) dated 5 August 1918 (p. 183); and Act III (MS 23865F), dated 12 October [19]24 (p. 295); the latter is probably the completion date of the full score (confirmed by the note at the end of the published version of 1929), as opposed to the vocal score of the opera, which was apparently completed at Harlech on 5 February 1920 (see note at end of the published vocal score (1922), and cf. George Lowe, Josef Holbrooke and His Work (London, 1920), p. 273). However, a note added at the end of the Prelude to Act III (MS 23865F, p. 190) suggests that a final revision was made in 1928. The vocal score was first published, with English and German words, as Bronwen: A Music Drama (No. 3) (London, 1922), and the full score in 1929 (see British Library Catalogue of Printed Music); the opera was first performed by the Carl Rosa Opera Company in Huddersfield on 1 February 1929.

The contents of this volume are of a miscellaneous nature and include 'Epitre a Boileau', 1806, (first folio misplaced and to be found towards the end of the volume), a copy of a letter, 1808, from Thomas Powell, 'aux Chataignes a Tottenham' to Monsieur L'Abbé De Levisac [i.e. Jean Pons Victor Lecoutz de Levizac], 'Epistle to Capt. Cooke', a copy of a memorial inscription in Latin to Henry Michel[l], A.M. (d. 1789), items of verse in French, 'Brief Dissertation on antient Opera', 'Epitre a mi Lord Orford' [i.e. Horace Walpole], and lines in French 'To Mrs Crespigny on her Novel The Pavilion, 1796'.

Original manuscript score and parts 'Sands of Time' an opera in 4 minutes, Libretto by Simon Rees, Music by Peter Reynolds (1993). Parts for Vocals (3 printed copies of Vocal score and Repetiteur, also loose folios). Parts for oboe I and II, alto saxophone I and II in E flat, bassoon, trumpet in B flat, percussion, flute. Spare parts for flute, oboe 1 and II, alto saxophone I and II and trumpet in B flat. Sketches and draft vocal score, 20-21 February 1993. Published Full Score (two copies). Full score for conductor (Peter Reynolds). Printed Vocal score with corrections and scoring; 1st proof with corrections. Provisional Full Score: 15 March 1993 (uncorrected with some parts and word underlay still to be filled in). Some correspondence and publicity material for the Cardiff Arts Open Day, 27 March 1993.