Untitled (adhered sheet with letter on "Lichtkuben," left page); Untitled (adhered sheet with notes on "Lichtkuben," right page)

Charcoal on cream laid paper

Graphite and ink on paper

Brown ink on cream antique laid paper

Graphite on off-white wove paper

Brown ink over graphite on off-white wove paper

Gouache and graphite on paper

Graphite on paper

Black and red marker on paper

Black and white chalk on blue antique laid paper; verso: red and black chalk

Watercolor on cream wove paper

Gouache and graphite on white Fome-Cor

Graphite on buff wove paper; verso: watercolor over graphite