1. Sonata for Solo Violoncello, 1955 Collection: Concert Programs (SOM) Contributers: Crumb, George (composer), Stephen Katz (cellist), and David Holkeboer (pianist) Performance: Senior Cello Recital Performance Date: 1981-02-11 Location: Music and Performing Arts Library, University of Illinois Concert Program: v.30 p.61
2. Sonate fur Violoncello solo Op. 25 No. 3, 1923 Collection: Concert Programs (SOM) Contributers: Hindemith, Paul (composer), Stephen Katz (cellist), and David Holkeboer (pianist) Performance: Senior Cello Recital Performance Date: 1981-02-11 Location: Music and Performing Arts Library, University of Illinois Concert Program: v.30 p.61