Untitled (blank, left page); Untitled (notes with "Rasterbild" sketches, right page)

Black marker on paper

Black ink on off-white modern laid paper

Graphite on paper

Graphite on paper

Graphite on envelope fragment

Graphite and colored crayons; graphite and colored crayon on paper

Graphite on paper

Black crayon on paper

Black ink on cream laid paper

Colored marker on paper

Black crayon on buff wove paper, darkened

Graphite on paper