1. Echo Song Collection: Music and Performing Arts Library: Choral Reference (MUXCAT_CHO) Contributers: Lasso, Orlando di (composer) and Gore, Gerald Wilfring (arranger) Format: Vocal Score Publication Date: unknown Location: Music and Performing Arts Library, University of Illinois at Urbana-Champaign
2. Echo Song Collection: Music and Performing Arts Library: Choral Reference (MUXCAT_CHO) Contributers: Lasso, Orlando di (composer) and Manney, C.F. (arranger) Format: Vocal Score Publication Date: unknown Location: Music and Performing Arts Library, University of Illinois at Urbana-Champaign