MLA

Clésinger-Sand, Solange, 1828-1899. Clairin, Madame. Box 1, folder 23. [1898]. https://collections.library.yale.edu/catalog/17444458.

APA, 6th edition

Clésinger-Sand, Solange, 1828-1899. (["Box 1, folder 23"])([1898])[Clairin, Madame]. https://collections.library.yale.edu/catalog/17444458.