Diderot, Thomas Ryder

Dimensions: plate: 21.9 x 16.4 cm (8 5/8 x 6 7/16 in.); ; sheet: 24.9 x 19.7 cm (9 13/16 x 7 3/4 in.). Medium: engraving on laid paper. Collection: National Gallery of Art. Thomas Ryder, Diderot, NGA 71520