Untitled (note and date, left page); Untitled (sketch for Kunstmuseum Celle, right page)

Black marker on paper

Colored marker on paper

Colored marker on paper

Ink on paper

Colored marker and black ink on paper

Colored marker on paper

Black marker on paper

Ink on mat board

Colored marker and black ink on paper

Blue and black marker on paper

Ink, watercolor, and collage on paper

Colored marker on paper