Program: Music by Padre Antonio Soler All-Soler Program Entered from booking ledger and New York Times concert listing and review. According to the review, Frederick Marvin used a "special piano built by John Challis after 18th-century models." "Who Makes Music and Where." New York Times (1923-), Mar 17 1968, p. 1. ProQuest. Web. 4 Dec. 2024. Strongin, Theodore. "FREDERICK MARVIN PLAYS SOLER MUSIC." New York Times (1923-), Mar 22 1968, p. 52. ProQuest. Web. 5 Dec. 2024.