11. Toccata, Opus 11 Collection: Concert Programs (SOM) Contributers: Prokofiev, Sergei (composer) and Ray Riley (pianist) Performance: Senior Recital Performance Date: 1979-02-15 Location: Music and Performing Arts Library, University of Illinois Concert Program: v.28 p.71
12. Verborgenheit Collection: Concert Programs (SOM) Contributers: Wolf, Hugo (composer), Susan Masters (soprano), and John Krebs (pianist) Performance: Junior Recital Performance Date: 1979-02-15 Location: Music and Performing Arts Library, University of Illinois Concert Program: v.28 p.69