Study for "Untitled (Geometric Solid)"

Black ink, graphite, and yellow chalk on thin buff wove paper

Black ink on off-white wove paper

Graphite on thin off-white wove paper

Gray wash, black ink, charcoal (applied wet), and red pencil on thin off-white wove paper; verso: black crayon and red pencil

Black chalk, charcoal, and graphite on off-white laid paper

Black crayon and ink on paper

Black, brown and purple crayon on paper

Black ink on cream wove paper

Graphite on paper

Charcoal, oil stick, acrylic, and Liquid Paper on white wove paper

Graphite and brown wash on buff laid paper

Watercolor and graphite on off-white wove paper