Entered from booking ledger and New York Times concert listing and review. According to the review, contralto Freda Gray-Massé was featured on additional (unspecified) selections besides the Vivaldi Gloria. "CONCERT AND OPERA PROGRAMS THIS WEEK." New York Times (1923-), Mar 19 1961, p. 1. ProQuest. Web. 21 Sep. 2022. Ericson, Raymond. "Colby College Choir Heard in Concert." New York Times (1923-), Mar 27 1961, p. 27. ProQuest. Web. 22 Sep. 2022.