Untitled (front endpaper, left page); Untitled (signature, right page)

Red crayon on cardboard, discolored

Charcoal on off-white wove paper

Colored and metallic marker and black pen on paper

Black ink on off-white wove paper (recto and verso)

Colored marker and black pen on paper

Black ink on off-white wove paper

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

Black ink on off-white wove paper

Brown ink and gray wash with traces of white gouache on blue laid paper, with framing lines in brown ink, laid down on blue laid paper

Graphite on paper

Blue crayon on paper

Watercolor, pastel, and black chalk on prepared paper