Friedrich Frobel House, Bad Liebenstein, 1924: Plan of roof level, 1:200

Graphite and colored crayons on paper

Black and red marker on paper

Colored marker on paper

Black crayon on paper

Colored marker and black pen on paper

Black crayon on paper

Graphite on paper

Alkyd paint on coated paper, laid down on card

Colored marker on paper

Graphite with yellow and green crayon on paper

Colored marker on paper

Colored crayons on paper