1. Etudes Tableaux Op. 33 Collection: Concert Programs (SOM) Contributers: Rachmaninoff (composer) and Sigrid Thomas (piano) Performance: Junior Recital Performance Date: 1984-04-26 Location: Music and Performing Arts Library, University of Illinois Concert Program: v.33 p.355
2. Polonaise in C-sharp minor Op. 26 No. 1 Collection: Concert Programs (SOM) Contributers: Chopin (composer) and Sigrid Thomas (piano) Performance: Junior Recital Performance Date: 1984-04-26 Location: Music and Performing Arts Library, University of Illinois Concert Program: v.33 p.355
3. Sonata in A Major L. 391 Collection: Concert Programs (SOM) Contributers: Scarlatti (composer) and Sigrid Thomas (piano) Performance: Junior Recital Performance Date: 1984-04-26 Location: Music and Performing Arts Library, University of Illinois Concert Program: v.33 p.355
4. Sonata in F-sharp Major Op. 78 Collection: Concert Programs (SOM) Contributers: Beethoven (composer) and Sigrid Thomas (piano) Performance: Junior Recital Performance Date: 1984-04-26 Location: Music and Performing Arts Library, University of Illinois Concert Program: v.33 p.355