MLA

Simpson, Randolph Linsly, 1927-1992. Unknown photographer Full length portrait of Jessie Ross. Man in suit stands in overcoat, scarf, Derby hat, and gloves. Early 20th century photograph. 5-3/4 x 3-7/8. Box 19. circa 1925. https://collections.library.yale.edu/catalog/2042504.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 19"])(circa 1925)[Unknown photographer Full length portrait of Jessie Ross. Man in suit stands in overcoat, scarf, Derby hat, and gloves. Early 20th century photograph. 5-3/4 x 3-7/8]. https://collections.library.yale.edu/catalog/2042504.