Untitled (bleed-through of previous page, left page); Untitled (cityscape [Dubai from plane], right page)

Black ink, charcoal, watercolor, and watercolor pencil on cream laid paper, edges taped

Watercolor on paper

Black ink, gray and red wash, incised, on cream antique laid paper, with two framing lines in gray ink; verso: incised, with oil residue

Black ink on albumen photographic paper

Colored pencil on paper

Graphite and colored pencil on paper

Charcoal and graphite on off-white wove paper

Black crayon on paper

Blue crayon on dark cream wove paper

Graphite and crayon on paper

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

Black and white chalk drawing mounted within a book on Prud'hon