Entered from booking ledger and New York Times concert listing and review. "THIS WEEK'S CONCERT AND OPERA PROGRAMS." New York Times (1923-), Apr 28 1963, p. 134. ProQuest. Web. 27 Sep. 2023. "Clifton Robertson, Pianist, Plays Romantic Works." New York Times (1923-), May 03 1963, p. 37. ProQuest. Web. 27 Sep. 2023.