Parnassus; William Bernard Cooke; 1778-1855; British; after Joseph Mallord William Turner; 1775-1851; British; 1821; Line engraving and etching; engraver's proof on moderately thick; slightly textured; cream; wove paper; with cream; chine colle; Sheet: 14 3/16 x 11 7/8 inches (36 x 30.2 cm); Plate: 4 3/8 x 5 7/8 inches (11.1 x 14.9 cm); Chine coll? 4 1/4 x 5 3/4 inches (10.8 x 14.6 cm); and Image: 3 3/8 x 4 7/8 inches (8.6 x 12.4 cm)