1. MS Mus. 1804/1/12/6 Reference (shelfmark): MS Mus. 1804/1/12/6 Title: Thea Musgrave: 'Simon Bolívar', opera. Composition drafts Collection Area: Music Collections Languages: English Date Range: 1989-1992 Extent: 5 volumes
2. MS Mus. 1804/1/12/6/2 Reference (shelfmark): MS Mus. 1804/1/12/6/2 Title: Thea Musgrave: 'Simon Bolívar', opera. Composition draft Scope & Content: Composition draft in ink, coloured inks and pencil. Collection Area: Music Collections Languages: English Date Range: 1989-1992 Extent: 4 volumes
3. MS Mus. 1804/1/12/6/1 Reference (shelfmark): MS Mus. 1804/1/12/6/1 Title: Thea Musgrave: 'Simon Bolívar', opera. Composition draft photocopy Scope & Content: 'SiBo Sketches Aug 1991'. A photocopy of the composition draft, including all scenes of the opera except scene 9 ('The Departure'). The originals for this photocopied version have since been changed. Collection Area: Music Collections Languages: English Date Range: 1991 Extent: 1 volume
4. MS Mus. 1804/1/12/6/2/1 Reference (shelfmark): MS Mus. 1804/1/12/6/2/1 Title: Thea Musgrave: 'Simon Bolívar', opera. Composition draft. Prologue and scenes 1-4 Collection Area: Music Collections Languages: English Date Range: 1989-1992 Extent: 1 volume
5. MS Mus. 1804/1/12/6/2/2 Reference (shelfmark): MS Mus. 1804/1/12/6/2/2 Title: Thea Musgrave: 'Simon Bolívar', opera. Composition draft. Scenes 5-7 Collection Area: Music Collections Languages: English Date Range: 1990-1992 Extent: 1 volume
6. MS Mus. 1804/1/12/6/2/4 Reference (shelfmark): MS Mus. 1804/1/12/6/2/4 Title: Thea Musgrave: 'Simon Bolívar', opera. Composition draft. Scenes 11-14 and Coda Scope & Content: In scene 12, Musgrave identifies 'Musical motives “borrowed” from The Decision' Collection Area: Music Collections Languages: English Date Range: 1989-1992 Extent: 1 volume
7. MS Mus. 1804/1/12/6/2/3 Reference (shelfmark): MS Mus. 1804/1/12/6/2/3 Title: Thea Musgrave: 'Simon Bolívar', opera. Composition draft. Scenes 8-10 Scope & Content: Scenes 8-10 (the first three scenes of Act 2). Collection Area: Music Collections Languages: English Date Range: 1990-1992 Extent: 1 volume