Cite

[Sketch of two ladies in hats]

MLA

Töpffer, Rodolphe, 1799-1846. [Sketch of two ladies in hats]. Box 1 | Folder 15. https://collections.library.yale.edu/catalog/16612830.

APA, 6th edition

Töpffer, Rodolphe, 1799-1846. (["Box 1 | Folder 15"])[[Sketch of two ladies in hats]]. https://collections.library.yale.edu/catalog/16612830.