Unfinished Study of Lioness and Cubs, from the North-West Door of the Duomo of Florence

Graphite and black crayon on paper

Colored marker on paper

Black chalk on cream antique laid paper, framing lines in black chalk

Graphite and black ink on off-white tracing paper

Red chalk and red chalk wash over graphite and black chalk on cream antique laid paper, framing lines in red chalk and graphite, incised; verso: reddened for transfer

Black chalk on tan antique laid paper

Graphite on darkened off-white wove paper

B/w photocopy, opaque watercolor on paper, and adhesive on paper

Brown ink and brown wash with traces of black chalk, heightened with white gouache, on four pieces of blue antique laid paper, laid down to thick cream antique laid paper (the mount of the collector John Skippe)

Graphite on paper

Colored chalk on heavy brown wove paper

Sketchbook with beige-fabric-covered cardboard covers