1. Ballade, Op. 38 in F Collection: Concert Programs (SOM) Contributers: Chopin, F.F. (composer) and Judith Quiroz-Stark (piano) Performance: Junior Piano Recital Performance Date: 1982-12-14 Location: Music and Performing Arts Library, University of Illinois Concert Program: v.31 p.873
2. Sonata in E-Flat Hob. XVI: 49 Collection: Concert Programs (SOM) Contributers: Haydn, F.J. (composer) and Judith Quiroz-Stark (piano) Performance: Junior Piano Recital Performance Date: 1982-12-14 Location: Music and Performing Arts Library, University of Illinois Concert Program: v.31 p.873