Untitled (bleed-through of previous page, left page); Untitled (study of male figure with head covering, right page)

Black ink over graphite on cream paper mounted to board

Graphite on paper

Black marker on paper

Black marker on paper

Graphite on paper

Black and red marker and opaque watercolor on paper

Brown ink and brown wash, with later additions of gray wash, on cream antique laid paper, laid down

Graphite on paper

Oil paint on offset lithograph, 1989 edition of Flora de la Real Expedición Botánica del Nuevo Reino de Granada (1783-1810)

Colored pencil on cream wove paper

Graphite on paper

Charcoal, with erasure and smudging on off-white wove paper