The Cow-Pock- or- The Wonderful Effects of the New Innoculation!. James Gillray (English, 1756-1815); published by Hannah Humphrey (English, c. 1745-1818). Date: 1802. Dimensions: 234 ? 338 mm (image); 252 ? 347 mm (plate); 270 ? 387 mm (sheet). Etch