1. MUS RP 6866 Reference (shelfmark): MUS RP 6866 Title: Scope & Content: Johann Strauss II: Autograph letter signed. Sotheby’s sale 21 May 1999 lot.no.299. Creation dates: Undated Collection Area: Music Collections Languages: Undetermined Date Range: 1 Feb 2000 Extent: 2 photocopies