Untitled (notes, left page); Untitled (sketch for Kunstmuseum Celle, right page)

Black marker on paper

Red and black marker on paper

Red and black marker on paper

Red and black marker on paper

Watercolor, acrylic and graphite on off-white wove paper

Colored marker on paper

Colored marker and black ink on paper

Oil pastel on paper

Black marker on paper

Colored marker and black ink on paper

Colored marker on paper

Red felt-tipped pen on paper