MLA

Simpson, Randolph Linsly, 1927-1992. Unknown photographer "The Mississippi River, New Orleans, Louisiana." Stereograph, light yellow card. Box 13, folder 684. circa 1885. https://collections.library.yale.edu/catalog/32582709.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 13, folder 684"])(circa 1885)[Unknown photographer "The Mississippi River, New Orleans, Louisiana." Stereograph, light yellow card]. https://collections.library.yale.edu/catalog/32582709.