1. 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