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

Black marker on paper

Colored marker on paper

Black and blue marker on paper

Ink on mat board

Blue marker and black ink on paper

Mixed media

Colored marker on paper

Paper

Watercolor on paper

Blue and black marker on paper

Ink on postcard

Watercolor, acrylic and graphite on off-white wove paper