Encore information added the review published in the New York Times and handwritten notations in one copy of the printed concert program. PREMIERE of Sergei Lyapunov's VIOLIN CONCERTO IN D MINOR, OP. 61 "OVATION TO HEIFETZ GIVEN AT RECITAL." New York Times (1923-), 22 Jan. 1930, p. 17. ProQuest. Web. 12 Aug. 2025.