Untitled (bleed-through of previous page, left page); Untitled (designs for "Zero Raum," right page)

Black marker on paper

Black crayon on cream tracing paper

Red chalk, gray wash, black and brown ink, white gouache and black chalk, on off-white antique laid paper

Black ink on frosted mylar

Colored marker on paper

Black ink and gray wash on off-white antique laid paper

Transparent and opaque watercolor and graphite on white wove paper

Black and red marker on paper

Black crayon on paper

Charcoal on off-white laid paper

Black ink and charcoal on beige laid paper

Black ink, watercolor, and charcoal on cream wove paper