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

Black and red marker and black pen on paper

Graphite on paper and mounted

Graphite on paper

Graphite on paper

Gouache and ink on paper

Graphite on paper

B/w photocopy, black marker, and adhesive on paper

Graphite on paper

Black ink on paper

Watercolor and graphite on paper

Black marker on paper

Green crayon on paper