MLA

Simpson, Randolph Linsly, 1927-1992. J.B. Gray, Griffin, GA Full length formal portrait, Mrs. Buttle in flowered hat, hand resting on law book on table. Photographic postcard. Box 26. circa 1915. https://collections.library.yale.edu/catalog/16183413.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 26"])(circa 1915)[J.B. Gray, Griffin, GA Full length formal portrait, Mrs. Buttle in flowered hat, hand resting on law book on table. Photographic postcard]. https://collections.library.yale.edu/catalog/16183413.