1. MS Mus. 1813/2/1/31 Reference (shelfmark): MS Mus. 1813/2/1/31 Title: Files O- to R- Scope & Content: Files of general correspondence involving or relating to individuals or organisations with names beginning with letters between O- and R-. Collection Area: Music Collections Languages: Dutch, English, French, German, and Spanish Date Range: 1945-1949 Extent: 1 box (3 folders, 5 sub-files)