MLA

Koch, Frederick R. (Frederick Robinson). Music/Hérodiade. Box 137, folder 1479. 1879-80. https://collections.library.yale.edu/catalog/2004666.

APA, 6th edition

Koch, Frederick R. (Frederick Robinson). (["Box 137, folder 1479"])(1879-80)[Music/Hérodiade]. https://collections.library.yale.edu/catalog/2004666.