Cite

Profile of a woman: in pencil

MLA

Koch, Frederick R. (Frederick Robinson). Profile of a woman: in pencil. Box 20, folder 376. 1880 Apr 30. https://collections.library.yale.edu/catalog/2007264.

APA, 6th edition

Koch, Frederick R. (Frederick Robinson). (["Box 20, folder 376"])(1880 Apr 30)[Profile of a woman: in pencil]. https://collections.library.yale.edu/catalog/2007264.