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

Colored crayons on paper

Black crayon on paper and mounted

Black and blue marker, paper, and adhesive on paper

Black marker on paper

Graphite and colored crayon on paper

Ink and applied typescript on paper

Black crayon on paper

Colored marker on paper

Graphite on paper

Charcoal on off-white laid paper

Black marker on paper

Black crayon on paper