Untitled (graphite transfer, left page); Untitled (sketch by Piene's daughter [Chloe] right page)

Graphite on paper

Green and dark green crayon on paper

Paper

Graphite on paper

Paper

Colored marker on paper

Blue pen on paper

Watercolor and graphite on white wove paper mounted to cream board

Charcoal on paper

Colored marker and black pen on paper

Colored marker on paper

Ink and watercolor on paper