Sketchbook: Portraits/heads in the shape of buildings. Martin Luther, Kant, etc./Miner's lamp

Graphite on paper

Black and red marker on paper

Black marker on paper

Colored marker and felt-tipped pen on paper

Graphite on paper

Graphite and green crayon ; graphite on paper

Colored crayon on paper

Colored marker on paper

Black crayon on paper

Ink on paper

Black marker on paper

Graphite on paper