Untitled (blank, left page); Untitled (Halde Rheinpreußen, right page)

Black crayon on paper

Ink, wash, and gouache on paper

Graphite on paper

Black crayon on paper

Black pen and watercolor stain on paper

Black ink on cream laid paper

Colored crayons on paper

Black crayon on paper

Colored marker on paper

Watercolor on paper

Graphite on paper

Graphite on paper