Spring1650 · Etching on ivory paperSheet: 13.5 × 13.4 cm (5 3/8 × 5 5/16 in.)Art Institute of Chicago
A Forest Interior, with a Seated Figure1629 · Black chalk and brush and brown wash, with touches of black crayon and traces of opaque white watercolor, ruled in pen and black ink at edges, on ivory laid paper18.5 × 13 cm (7 5/16 × 5 1/8 in.)Art Institute of Chicago