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

Black marker on paper

Black ink over graphite on cream laid paper

Watercolor over graphite on off-white wove paper

Gray wash on off-white wove paper

Postage stamps, paper, and adhesive on paper

Graphite and blue crayon on paper

Graphite on paper

Colored marker on paper

Graphite on paper

Colored marker and watercolor on paper

Graphite on paper

Black and red marker on paper