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

Gouache on paper

Graphite and white pastel on gray-green wove paper

Brown ink and gray wash over traces of graphite on off-white antique laid paper; verso: black crayon.

Red marker and black pen on paper

Paper

Watercolor and gum varnish on off-white wove paper

Brown ink and brown wash, strengthened with black ink, on cream antique laid paper, laid down overall to antique laid paper, itself laid down overall to twentieth-century white card

Colored marker on paper

Brown ink over graphite on white antique laid paper

Black and blue pen on paper

Colored crayons on paper

Graphite on off-white wove paper