Fig 1 Profils extérieurs de la Tour des Vents Fig 2 Coupe de l'une de trois marches qui forment la base ou le stereobat - Stuart James & Revett Nicholas - 1808, 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.