New York City Ballet production of "Concerto Barocco" with Elise Flagg, Bart Cook and Nichol Hlinka, choreography by George Balanchine (New York)

Billy Rose Theatre Division, The New York Public Library. "New York City Ballet production of "Concerto Barocco" with Elise Flagg, Bart Cook and Nichol Hlinka, choreography by George Balanchine (New York)" The New York Public Library Digital Collections. 1978. https://digitalcollections.nypl.org/items/26947ff0-ec27-0136-6bff-2324db143032

Billy Rose Theatre Division, The New York Public Library. (1978). New York City Ballet production of "Concerto Barocco" with Elise Flagg, Bart Cook and Nichol Hlinka, choreography by George Balanchine (New York) Retrieved from https://digitalcollections.nypl.org/items/26947ff0-ec27-0136-6bff-2324db143032

Billy Rose Theatre Division, The New York Public Library. "New York City Ballet production of "Concerto Barocco" with Elise Flagg, Bart Cook and Nichol Hlinka, choreography by George Balanchine (New York)" New York Public Library Digital Collections. Accessed November 11, 2025. https://digitalcollections.nypl.org/items/26947ff0-ec27-0136-6bff-2324db143032

<ref name=NYPL>{{cite web | url=https://digitalcollections.nypl.org/items/26947ff0-ec27-0136-6bff-2324db143032 | title= (still image; still image) New York City Ballet production of "Concerto Barocco" with Elise Flagg, Bart Cook and Nichol Hlinka, choreography by George Balanchine (New York) (1978) | author=Digital Collections, The New York Public Library | accessdate=November 11, 2025 | publisher=The New York Public Library, Astor, Lenox, and Tilden Foundations}}</ref>