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

Ink and applied type on paper

Colored marker on paper

Colored marker and blue pen on paper

Colored marker on paper

Graphite, black and colored crayon on paper

Paper

Graphite on paper

Black marker on paper

Graphite on paper

Graphite on paper

Graphite and red ink on paper

Charcoal on paper