Untitled (blank, left page); Untitled (landscape "irrigation," right page)

Graphite and watercolor on paper

oil and black colored pencil on white wove paper, mounted to white wove paper, in printed white wove paper folder

Colored marker on paper

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

Gouache and charcoal on white paper

Opaque watercolor and adhesive on paper

Colored marker on paper

Black ink and brown wash over black chalk on toned cream antique laid paper, laid down on laid paper, framing lines in brown ink

Colored marker on paper

Colored crayons on paper

Brown ink, brown and gray wash over black chalk on off-white antique laid paper