MLA

Bruton, W. (William), 1854 or 5-1885. Drawing, for poster for pantomime toy books. Box 34 | Folder 536. [ca. 1880]. https://collections.library.yale.edu/catalog/15489974.

APA, 6th edition

Bruton, W. (William), 1854 or 5-1885. (["Box 34 | Folder 536"])([ca. 1880])[Drawing, for poster for pantomime toy books]. https://collections.library.yale.edu/catalog/15489974.