Photographs and color slide
MLA
Young, Marguerite, 1908-1995. Photographs and color slide. Box 18. 1925-1995. https://collections.library.yale.edu/catalog/17214932.
APA, 6th edition
Young, Marguerite, 1908-1995. (["Box 18"])(1925-1995)[Photographs and color slide]. https://collections.library.yale.edu/catalog/17214932.