There have been three accruals. The first and principal accrual of the collection was compiled by his close friend and admirer, Frank Holliday. During the 1960s the composer agreed to allow Holliday to tape record him playing his own compositions. Their correspondence over a forty year period as well as the audio reels and cassettes are the core of this collection. The reels have been reproduced on audio cassettes for use by researchers. The number of audio cassettes listed above refers only to original cassettes. The first accrual is arranged into the following series: Sorabji/Holliday correspondence; general correspondence; Sorabji's writings, scores, manuscripts, publicity, and photographs; audio reels and microfilm; large photographs and audio discs. The second accrual (11-1998) consists of 26 letters and 9 cards written by Sorabji to Dr. Cecil Ewing (a disciple of Sorabji) between 1945 and 1983, 1 letter from Ewing to Holliday, and a periodical. Accrual (12-2005) consists of material from two sources: Norman P. Gentieu, a science writer, jazz musician and editor, and Cecil Ewing. It is arranged into the following series: Gentieu's general correspondence; material related to Bernard John Van Dieren II, son of the music critic Bernard Van Dieren; material related to reproduction of Sorabji's works; Norman P. Gentieu's Sorabji's files; Ewing's general correspondence and Sorabji sound recordings.
