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. 1804/1/4/2/2 Reference (shelfmark): MS Mus. 1804/1/4/2/2 Title: Thea Musgrave: 'The Decision', opera. Draft. Act 2 Collection Area: Music Collections Languages: English Date Range: 1965 Extent: 1 volume
3. MS Mus. 1804/1/4/2/3 Reference (shelfmark): MS Mus. 1804/1/4/2/3 Title: Thea Musgrave: 'The Decision', opera. Draft: Act 3 Collection Area: Music Collections Languages: English Date Range: 1965 Extent: 1 volume
4. MS Mus. 1804/1/4/2/1 Reference (shelfmark): MS Mus. 1804/1/4/2/1 Title: Thea Musgrave: 'The Decision', opera. Draft: Act 1 Scope & Content: (1.) Act I. (2.) A few leaves resembling a fair copy, with significant emendations to the part for John Brown. Collection Area: Music Collections Languages: English Date Range: 1965 Extent: 1 volume