Untitled (blank, front endpaper, left page); Untitled (Piene signature, right page)

Paper

Graphite on paper and mounted

Black crayon on paper

Graphite on paper

Black ink and charcoal on cream laid paper

Graphite and colored pencil on paper

Graphite on paper

Graphite on paper

Black and metallic marker on paper

Colored marker on paper

Black ink on paper

Colored marker on paper