Untitled ("Lichtplastiken" (Light Sculptures) with notes and bleed-through of previous page, left page); Untitled (blue marks, right page)

Black crayon on paper

Black crayon on paper

Colored crayons on paper and mounted

Graphite on orange wove paper

Black ink with extensive scratchwork and graphite on white scratchboard

Black and white chalk on blue wove paper; verso: black and white chalk

Ink on paper

Black crayon on paper

Black chalk heightened with white chalk and white gouache on blue wove paper

Brown ink, brown wash and graphite or black chalk on cream antique laid paper

Graphite on darkened off-white wove paper

Charcoal on cream laid paper