‘Remains of the fountain-head of the Acqua Claudia and New Anio’, plate XVII, Fig. I, from a set of 77 plates, <i>G. Piranesi, Le Antichità Rom</i><i>ane<i>, </i>vol. I</i>, bound in Paris by Tessier, 1803-1807, etching with engraving, by Giovanni Battista Piranesi, Rome