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

Black and brown crayon on paper

Black crayon on paper

Black crayon on paper

Black crayon on paper

Paper

Graphite on paper

Charcoal on off-white laid paper

Pen, graphite, and watercolor on paper

Graphite on paper

Graphite and colored crayons on paper

Graphite on paper and mounted

Folded white paper