Cite

Ambrotype in a case, of a boy and a woman

MLA

Palmquist, Peter E. (1936-2003). Ambrotype in a case, of a boy and a woman. Box 8, folder 75. circa 1856. https://collections.library.yale.edu/catalog/2056729.

APA, 6th edition

Palmquist, Peter E. (1936-2003). (["Box 8, folder 75"])(circa 1856)[Ambrotype in a case, of a boy and a woman]. https://collections.library.yale.edu/catalog/2056729.