MLA

Simpson, Randolph Linsly, 1927-1992. McClees and Germon, Philadelphia, PA A post-mortem portrait; young man three quarter length on a background of a white knit shawl with tassels. Quarter plate, Daguerreotype. Box 2, folder 14. circa 1855. https://collections.library.yale.edu/catalog/2002076.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 2, folder 14"])(circa 1855)[McClees and Germon, Philadelphia, PA A post-mortem portrait; young man three quarter length on a background of a white knit shawl with tassels. Quarter plate, Daguerreotype]. https://collections.library.yale.edu/catalog/2002076.