1. MS Mus. 1804/1/4/2 Reference (shelfmark): MS Mus. 1804/1/4/2 Title: Thea Musgrave: 'The Decision', opera. Draft Collection Area: Music Collections Languages: English Date Range: 1965 Extent: 3 volumes
2. MS Mus. 1804/1/4/3 Reference (shelfmark): MS Mus. 1804/1/4/3 Title: Thea Musgrave: 'The Decision', opera. Full score Scope & Content: Full score, on transparencies. The text on the title-page for each act is printed. Collection Area: Music Collections Languages: English Date Range: 1965 Extent: 3 volumes
3. MS Mus. 1804/1/4/5 Reference (shelfmark): MS Mus. 1804/1/4/5 Title: Thea Musgrave: 'The Decision', opera. Main vocal score Collection Area: Music Collections Languages: English Date Range: 1965-1967 Extent: 3 volumes
4. MS Mus. 1804/1/5/1 Reference (shelfmark): MS Mus. 1804/1/5/1 Title: Thea Musgrave: 'Beauty and the beast'. Scenario and composition drafts Collection Area: Music Collections Languages: English Date Range: 1968-1969 Extent: 2 volumes
5. MS Mus. 1804/1/5/3 Reference (shelfmark): MS Mus. 1804/1/5/3 Title: Thea Musgrave: 'Beauty and the beast'. Full score Scope & Content: Full score; 'London. April 1968–May 1969'. On transparencies except where otherwise stated, bearing a copyright date of 1968 except where otherwise stated. As a result of cuts, there are gaps in the composer's foliation. Collection Area: Music Collections Languages: English Date Range: 1968-1970 Extent: 4 volumes
6. MS Mus. 1804/1/6/2 Reference (shelfmark): MS Mus. 1804/1/6/2 Title: Thea Musgrave: 'The Voice of Ariadne', chamber opera. Draft Scope & Content: Composition draft, in pencil and ink. Collection Area: Music Collections Languages: English Date Range: 1972-1973? Extent: 3 volumes
7. MS Mus. 1804/1/7/2 Reference (shelfmark): MS Mus. 1804/1/7/2 Title: Thea Musgrave: 'Mary, Queen of Scots', opera. Composition draft Scope & Content: Composition draft. The verso of many leaves contains rougher sketches. Collection Area: Music Collections Languages: English Date Range: 1973? Extent: 4 volumes
8. MS Mus. 1804/1/7/4 Reference (shelfmark): MS Mus. 1804/1/7/4 Title: Thea Musgrave: 'Mary, Queen of Scots', opera. Full score Collection Area: Music Collections Languages: English Date Range: 1973? Extent: 4 volumes
9. MS Mus. 1804/1/8/4 Reference (shelfmark): MS Mus. 1804/1/8/4 Title: Thea Musgrave: 'A Christmas Carol', opera. Programmes and other materials Collection Area: Music Collections Languages: English Date Range: 1079 Extent: 2 volumes
10. MS Mus. 1804/1/11/6 Reference (shelfmark): MS Mus. 1804/1/11/6 Title: Thea Musgrave: 'Harriet, the Woman Called Moses', opera. Full score Collection Area: Music Collections Languages: English Date Range: 1985-1986 Extent: 2 volumes