1. La Nativite du Seigneur Collection: Concert Programs (SOM) Contributers: Messiaen, Olivier (composer) and Kenneth Powell (organ) Performance: Performance Performance Date: 1969-04-12 Location: Music and Performing Arts Library, University of Illinois Concert Program: vol. 17, p. 211
2. Suite du Deuxieme Ton Collection: Concert Programs (SOM) Contributers: Clerambault, Louis-Nicolas (composer) and Kenneth Powell (organ) Performance: Performance Performance Date: 1969-04-12 Location: Music and Performing Arts Library, University of Illinois Concert Program: vol. 17, p. 211