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

Graphite on off-white wove paper

Tracings, mostly in graphite, occasionally supplemented with gray wash, on cream antique laid paper

Black crayon on paper

Ink with colored washes on paper

Watercolor over graphite on off-white wove paper

Black and brown ink with brown wash, on cream wove paper, framing lines in black and red ink

Graphite on off-white wove paper

Graphite on paper

Pastel on off-white illustration board

Charcoal, oil stick, acrylic, and Liquid Paper on white wove paper

Graphite on cream wove paper

Graphite on paper