Cite

Ambrotype in a case, of a boy and a woman

MLA

Vance, Robert H., 1825-1876. Ambrotype in a case, of a boy and a woman. Box 7. ca. 1856. https://collections.library.yale.edu/catalog/2056729.

APA, 6th edition

Vance, Robert H., 1825-1876. (["Box 7"])(ca. 1856)[Ambrotype in a case, of a boy and a woman]. https://collections.library.yale.edu/catalog/2056729.