Tristan und Isolde by Richard Wagner, during a performance at the Metropolitan Opera House, New York City. Branzell, Karin, as Brangäne, Kirsten Flagstad as Isolde, Emanuel List as King Marke, and Lauritz Melchior as Tristan
MLA
Van Vechten, Carl, 1880-1964. Tristan und Isolde by Richard Wagner, during a performance at the Metropolitan Opera House, New York City. Branzell, Karin, as Brangäne, Kirsten Flagstad as Isolde, Emanuel List as King Marke, and Lauritz Melchior as Tristan. Box 385 | Folder 5764. 1935 April 8. https://collections.library.yale.edu/catalog/2034647.
APA, 6th edition
Van Vechten, Carl, 1880-1964. (["Box 385 | Folder 5764"])(1935 April 8)[Tristan und Isolde by Richard Wagner, during a performance at the Metropolitan Opera House, New York City. Branzell, Karin, as Brangäne, Kirsten Flagstad as Isolde, Emanuel List as King Marke, and Lauritz Melchior as Tristan]. https://collections.library.yale.edu/catalog/2034647.