1. My Love's an Arbutus Collection: Concert Programs (SOM) Contributers: Irish Air (composer), Polly Spang (performer), and Jamie Hagedorn (pianist) Performance: Piano Recital Performance Date: 1977-05-09 Location: Music and Performing Arts Library, University of Illinois Concert Program: v.26 p.551
2. Still wie die Nacht Collection: Concert Programs (SOM) Contributers: Bohm (composer), Polly Spang (performer), and Jamie Hagedorn (pianist) Performance: Piano Recital Performance Date: 1977-05-09 Location: Music and Performing Arts Library, University of Illinois Concert Program: v.26 p.551