Untitled (blank, left page); Untitled (design for "water cube" fountain, right page)

Graphite on paper

Colored marker on paper

Black marker on paper

Graphite and watercolor on paper

Watercolor over graphite on off-white wove paper

Graphite on off-white wove paper

Graphite on envelope

Red chalk on off-white antique laid paper; verso: red chalk

Green colored pencil and gray crayon on paper

Graphite & black pencil on off-white wove paper; verso: graphite & brown pencil

Ink on paper

Black ink and gray wash on cream laid paper