1. MS Mus. 1813/2/1/261 Reference (shelfmark): MS Mus. 1813/2/1/261 Title: Iannis Xenakis: General files, 1965–1970. Part 1 of 2. Scope & Content: Rufina Ampenoff's files. Correspondence and papers involving or relating to the production of Iannis Xenakis' works. Collection Area: Music Collections Languages: English, French, and German Date Range: 1964-1968 Extent: 1 box (4 folders, 4 sub-files)