MLA

Murphy, Gerald, 1888-1964. Wiborg girls in costume (Olga as Pierrot, Sara as Chinese empress, and Mary Hoyt as Dutch girl) by Bellsmith, Cincinnati, Ohio. Box 25, folder 451. circa 1899. https://collections.library.yale.edu/catalog/15258996.

APA, 6th edition

Murphy, Gerald, 1888-1964. (["Box 25, folder 451"])(circa 1899)[Wiborg girls in costume (Olga as Pierrot, Sara as Chinese empress, and Mary Hoyt as Dutch girl) by Bellsmith, Cincinnati, Ohio]. https://collections.library.yale.edu/catalog/15258996.