1. MS Mus. 1804/1/10 Reference (shelfmark): MS Mus. 1804/1/10 Title: Thea Musgrave: 'An Occurrence at Owl Creek Bridge', an opera for radio Scope & Content: Libretto by the composer, after the short story by Ambrose Bierce. 1981, 1984 and undated. Collection Area: Music Collections Languages: English Date Range: 1981-1984 Extent: 4 volumes