MLA

Murphy, Gerald, 1888-1964. Murphy children. Box 23, folder 412. circa 1924. https://collections.library.yale.edu/catalog/15260438.

APA, 6th edition

Murphy, Gerald, 1888-1964. (["Box 23, folder 412"])(circa 1924)[Murphy children]. https://collections.library.yale.edu/catalog/15260438.