Untitled (bleed-through of previous page, left page); Untitled (note, right page)

Black ink with gray wash on cream antique laid paper

Black crayon on paper

Colored marker on paper

Black pen on paper

Colored marker on paper

Black crayon, squared in black crayon, on off-white antique laid paper

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

Black crayon on paper

Graphite on paper

Transparent and opaque watercolor on antique laid paper

Pale and dark gray wash over black chalk on white laid paper

Graphite on paper