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

Brown and gray crayon on paper

Black and metallic marker on paper

Graphite on off-white wove paper

Black and purple ink, gouache, and graphite on cream laid paper, framing line in purple ink

Black crayon on brown wove paper

Black crayon on paper

Black crayon on paper

Colored marker and adhesive tape on paper

Black ink on deer skin (charba)

Black ink and charcoal on cream modern laid paper

Watercolor on paper

Graphite on paper