Untitled (drawing by Piene's daughter, left page); Untitled (bleed-through of following page with title for drawing, right page)

Black marker and opaque watercolor on paper

Colored marker and red pen on paper

Charcoal, chalk, and graphite on paper

Black crayon on paper

Paper

Graphite and red pencil on paper

Black crayon on paper

Black marker on paper

Blue ink, red marker, paper, and adhesive on paper

Graphite on paper and mounted

Graphite on paper

Black marker, adhered paper, and blue pen on paper