Untitled (bleed-through of previous page, left page); Untitled (car and silos in Seligman, MO, right page)

Paper

Black ink and gray wash, with some retouching, on buff antique laid paper

Colored marker, black ink, and opaque watercolor on paper

Watercolor over graphite on buff wove paper

Gouache and black crayon (?) on white wove paper

Graphite on paper

Black ink and gray wash on antique laid paper

Brown wash, black chalk, and touches of white chalk on blue antique laid paper, framing line in brown ink; verso: brown wash and black and white chalk, framing line in brown ink

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

Graphite on off-white wove paper

Graphite on paper

Graphite on tan wove paper; verso: brown crayon and graphite