1. Klavierubung Part 4; the Goldberg Variations (1742) Collection: Concert Programs (SOM) Contributers: Bach, Johann Sebastian (composer) and William Heiles (piano) Performance: Performance Performance Date: 1964-03-12 Location: Music and Performing Arts Library, University of Illinois Concert Program: vol. 12, p. 109
2. Sonata in A Major, op.101 Collection: Concert Programs (SOM) Contributers: Beethoven, Ludwig van (composer) and William Heiles (piano) Performance: Performance Performance Date: 1964-03-12 Location: Music and Performing Arts Library, University of Illinois Concert Program: vol. 12, p. 109