Untitled (blank, left page); Untitled (Nietzsche-Bau, right page)

Colored marker on paper

Blue and pink crayon on paper

Colored marker and black pen on paper

Black, brown and blue crayon on paper

Graphite on paper

Graphite on paper

Graphite on paper and mounted

Black chalk and graphite on off-white laid paper

Black crayon on paper

Colored marker on paper

Colored marker on paper

Black, yellow and blue crayon on paper