Untitled (bleed-through of previous page and color transfer, left page); Untitled (view of Aït Benhaddou, right page)

Black crayon on paper

Black and aqua marker on paper

Graphite on paper

Charcoal on blue wove paper

Colored pencil on paper

Graphite on off-white wove paper

Black ink and charcoal on cream laid paper

Metalpoint on prepared paper

Graphite on blue wove paper

Colored crayons ; graphite and colored crayons on paper

Graphite on beige paper

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