Untitled (blank, front endpaper, left page); Untitled (Piene signature, right page)

Blue marker and black pen on paper

Graphite on paper

Graphite on paper

Black crayon and colored crayon patches on paper

Graphite on back of letter

Black and colored ink and watercolor on white wove paper collage elements and photomechanical printed collage elements on cream board

Graphite on paper

Black and green crayon on paper

Black crayon on paper

Graphite on paper

white gouache, black and orange crayon, graphite, on white wove paper and glassine envelope

Colored crayon on paper