The central part of the basso relievo under the middle niche, supposed to represent the triumph of the emperor Trajan, i - Stuart James & Revett Nicholas - 1794

James stuart & nicholas revett. The antiquities of athens measured and delineated by james stuart f. R. S. And f. S. A. And nicholas revett painters and αrchitects, vol. Iii (ed. Willey reveley), london, john nichols, 1794. Date: 1794.