Untitled (sketch of shipyard along the Weser River in Minden, Germany, left page); Untitled (portrait of the artist's older brother [Reinhold], right page)

Graphite on paper

Colored marker on paper

Mixed media on white wove paper

Black crayon on paper

Graphite on paper

Black crayon on paper

Graphite and colored pencil on paper

Colored marker on paper

Graphite on paper

Graphite on paper

Blue and red crayon on paper

Black and colored crayons on paper