Untitled (bleed-through of previous page, left page); Untitled (design for "water cube," right page)

Graphite on slightly darkened off-white wove paper

Red chalk wash on white antique laid paper

Black chalk and white gouache, with later additions of red, brown and ocher chalks, on blue antique laid paper, mounted overall to coarse antique laid card.

Graphite on cream antique laid paper

Graphite on cream wove paper

Graphite and purple wash on beige wove paper

Brown and black ink and white opaque watercolor on blue paper

Graphite, black and red crayon, and black wash on white paper

Ink on paper

Watercolor over graphite on thin off-white wove paper

Colored marker on paper

Graphite on paper