The beach of Falesá : : opera in three acts, [op. 83],
Full and vocal scores, a pencil sketch, and a synopsis of the opera; together with copies of the libretto and related letters from Glyn Jones.
libretto by Glyn Jones, based on a short story by R. L. Stevenson.
The Rajah's diamond : : an opera in one act, op. 99,
Scores, pencil sketch and libretto.
libretto by Myfanwy Piper, based on a story by R. L. Stevenson.
The magician : : opera in one act, op. 88,
Full scores, a vocal score and a pencil sketch; and drafts of the libretto with a related letter from John Morgan.
libretto by John Morgan.
The trumpet major : : an opera in three acts, [op. 103],
Scores, pencil sketch, libretto and related material.
libretto by Myfanwy Piper, based on the novel by Thomas Hardy.
What the old man does is always right : : opera in one act, op. 93,
Full score, pencil sketch, libretto and camera script.
libretto by Myfanwy Piper.
Tower : : opera in three acts, [op. 170],
Scores, drafts of libretto and related material.
libretto by John Owen.