Untitled (bleed-through of previous page, left page); Untitled (measurements for "Lichtkubus," right page)

Colored marker on paper

Graphite and colored pencil on paper

Black and red marker on paper

Black ink over graphite on off-white laid paper

Charcoal on off-white laid paper

Black chalk on off-white wove paper, framing lines in black chalk and brown ink

Graphite on paper

Brown ink and gray wash with touches of graphite on cream antique laid paper

Ink on paper

Colored marker on paper

Watercolor and black chalk on off-white wove paper

Graphite on off-white wove paper