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

Colored marker on paper

Colored marker and opaque watercolor on paper

Blue marker and black ink on paper

Colored marker on paper

Red and black marker, and black ink on paper

Ink on mat board

Ink on postcard

Acrylic, pencil, colored pen on paper

Watercolor, acrylic and graphite on off-white wove paper

Mixed media

Blue and black marker on paper

Black marker on paper