1. MS Mus. 1183 Reference (shelfmark): MS Mus. 1183 Title: John Gerrard Williams: The Wings of Horus (Ballet) Scope & Content: Autograph full score of the concert version, in ink. Dated March 1928 on f. 2. Collection Area: Music Collections Languages: English Date Range: 1928 Extent: 1 volume (53 folios)