MLA

Simpson, Randolph Linsly, 1927-1992. Unknown Photographer Three quarter portrait: black woman wearing bandanna seated with white child on lap. Quarter plate, daguerreotype. Box 2, folder 16. circa 1855. https://collections.library.yale.edu/catalog/2002697.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 2, folder 16"])(circa 1855)[Unknown Photographer Three quarter portrait: black woman wearing bandanna seated with white child on lap. Quarter plate, daguerreotype]. https://collections.library.yale.edu/catalog/2002697.