1. MUS RP 7027 Reference (shelfmark): MUS RP 7027 Title: Scope & Content: Autograph letter from Nicholas Roerich to Serge Diaghilev. Sotheby’s sale 21 May 2004 lot no. 50. Creation dates: Undated Collection Area: Music Collections Languages: Undetermined Date Range: 1 Jun 2004 Extent: 3 photocopies