Cite

Photographs of Pietro and Lina Mascagni

MLA

Koch, Frederick R. (Frederick Robinson). Photographs of Pietro and Lina Mascagni. Box 29, folder 635. 1890. https://collections.library.yale.edu/catalog/2020943.

APA, 6th edition

Koch, Frederick R. (Frederick Robinson). (["Box 29, folder 635"])(1890)[Photographs of Pietro and Lina Mascagni]. https://collections.library.yale.edu/catalog/2020943.