1. MS Mus. 1813/2/1/263 Reference (shelfmark): MS Mus. 1813/2/1/263 Title: Iannis Xenakis: General Production file, part 1 of 2 Scope & Content: Papers and correspondence, mainly internal, regarding the production of Boosey & Hawkes' publication of Iannis Xenakis' works: the first of two parts. Collection Area: Music Collections Languages: English, French, German, and Polish Date Range: 1966-1976 Extent: 1 box (4 folders, 15 sub-files)