MLA

Simpson, Randolph Linsly, 1927-1992. Studio unknown Full length portrait of man in masonic apron. Tintype, cropped all corners, sixth plate. Box 7, folder 119. circa 1872. https://collections.library.yale.edu/catalog/2002175.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 7, folder 119"])(circa 1872)[Studio unknown Full length portrait of man in masonic apron. Tintype, cropped all corners, sixth plate]. https://collections.library.yale.edu/catalog/2002175.