Study of a Horse for "Apollo in His Chariot with the Hours," Museum of Fine Arts, Boston

Graphite and gesso on paper

Graphite on ivory laid paper

Graphite and colored crayons on paper

Graphite on paper

Sketchbook with black-and-white marbled cardboard covers

Graphite on off-white wove paper

Graphite on off-white laid paper

Brown ink and brown wash, heightened with white gouache, on antique laid paper prepared with yellow wash

Metalpoint on prepared paper

Graphite on paper

Colored marker on paper

Brown ink on ivory wove paper