MLA

Simpson, Randolph Linsly, 1927-1992. Brady's Album Gallery, Alexandria, VA Exterior view: slave pen; tall building with walls extending on either side beyond photograph. Large sign: "Price, Birch & Co. Dealers in Slaves." Union soldiers and covered horse-drawn wagon out front. Carte de visite. Box 11, folder 495. 1862. https://collections.library.yale.edu/catalog/2003964.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 11, folder 495"])(1862)[Brady's Album Gallery, Alexandria, VA Exterior view: slave pen; tall building with walls extending on either side beyond photograph. Large sign: "Price, Birch & Co. Dealers in Slaves." Union soldiers and covered horse-drawn wagon out front. Carte de visite]. https://collections.library.yale.edu/catalog/2003964.