A letter, 1 April 1971, from Glyn Jones, enclosing a manuscript synopsis of the opera; libretto (with corrections) and related letters (5) from Glyn Jones; together with typescript drafts of the libretto. Typescript rehearsal and performance schedules are included.

Ink and typescript drafts of the libretto; a related letter, March 1975, from John Morgan; a copy of the artists' schedule, April 1975; and programmes and leaflets relating to performances of the opera.

Handwritten and typescript photocopies of libretto with amendments and a letter from Myfanwy Piper; and typescript of rehearsal and recording schedules, May 1979.

Drafts of libretto (ink and typescript), and related letters from Myfanwy Piper; together with programmes of the world premiere, 1 April 1981, at the Opera Theatre, Royal Northern College of Music, Manchester, and a pamphlet entitled 'The Country of "The Trumpet Major" '(1974).

Various typescript drafts, 1997-1998, of the libretto, and a synopsis, with two related letters from John Owen; letters from Opera Box, 1998-2000; 'visual contemplations' by Russell Craig for a setting for the opera; together with a copy of Hywel Francis, 'The Tower Story' (1996) and a leaflet, '14 days that shook Britain' (Tower NUM Lodge).

Typescript copies of libretto, with amendments; and typescript copy of HTV camera script, 16 July 1979.