Entered from booking ledger and New York Times concert listing and review. The personnel of the quartet is not listed in the review; however, personnel has been inferred based on the Wikipedia article on the Hungarian Quartet. The obituaries for Székely and Koromzay that are linked from the article confirm their tenure in the group. A biographical sketch accompanying an article written for the International Cello Society by cellist Gábor Magyar confirms his tenure with the group beginning in 1956. The group's second violinist participation is less certain; it may have been either Alexandre Moszkowsky or Michael Kuttner: in his book "Székely and Bartók: The Story of a Friendship", Claude Kenneson states that Moszkowsky retired from the group in 1959 and was replaced by Kuttner, who remained with the group until 1972. For this reason no second violinist has been listed on this record. "CONCERT AND OPERA PROGRAMS OF THE WEEK." New York Times (1923-Current file), Mar 08 1959, p. 1. ProQuest. Web. 24 June 2020. "CHAMBER MUSIC HEARD: HUNGARIAN QUARTET OFFERED BY SUNDAY CONCERT SOCIETY." New York Times (1923-Current file), Mar 09 1959, p. 35. ProQuest. Web. 24 June 2020. “Hungarian Quartet.” Wikipedia, 31 Dec. 2021. Wikipedia, https://en.wikipedia.org/w/index.php?title=Hungarian_Quartet&oldid=1062953897. Internet Cello Society Newsletter, Tutti Celli. http://www.cello.org/Newsletter/NovDec97.htm. Accessed 26 Jan. 2022. Kenneson, Claude. Székely and Bartók: The Story of a Friendship. Amadeus Press, 1994.