Untitled (blank, left page); Untitled (exhibition layout for Duisburg Kunsthalle, right page)

Graphite on cream wove paper

Graphite on paper

Gouache, watercolor over graphite on cream antique laid paper

Graphite

Graphite on paper

paper

Brown ink on cream laid paper, laid down to pale green laid paper with folio 6b

Black ink and adhesive on paper

Graphite on green wove paper

Black crayon on paper

Graphite and ink ; graphite on paper

Ink and color on paper