Keywords: Giovanni Battista Piranesi - Prisoners on a Projecting Platform - WGA17844.jpg between 1749 1760 Etching and engraving first state of two Institution Metropolitan Museum of Art object history credit line accession number WGA link 17844 http //www wga hu/art/p/piranesi/carceri2 jpg http //www wga hu/html/p/piranesi/carceri2 html PD-old-100 graphics study Italian 1751-1800 Le Carceri d'Invenzione Prints in the Metropolitan Museum of Art 18th-century engravings WGA form graphics WGA type study WGA School Italian WGA time period 1751-1800 |