11. The Vagabond Collection: Concert Programs (SOM) Contributers: Williams, R. Vaughn (composer), Michael Datz (voice), and Louis Scaglione (piano) Performance: Voice Division Recital Performance Date: 1988-04-26 Location: Music and Performing Arts Library, University of Illinois Concert Program: v.37 p.387
12. Widmung Collection: Concert Programs (SOM) Contributers: Schumann, Robert (composer), Mijin Park (voice), and Tom Higgerson (piano) Performance: Voice Division Recital Performance Date: 1988-04-26 Location: Music and Performing Arts Library, University of Illinois Concert Program: v.37 p.387