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

Colored marker on paper

Graphite on paper

Graphite on paper

Colored marker on paper

Graphite and watercolor on paper

Black marker on paper

Collage: white masking tape, clear pressure-sensitive tape, and graphite on off-white wove paper

Graphite on paper

Black marker on paper

Graphite and watercolor on off-white wove paper

Black marker and ink, and opaque watercolor on paper

Graphite on paper