"Haus Sonnenfang" Sanatorium, Berlin, 1931: North and south elevations

Black crayon on paper

Graphite on paper

Gouache on gray-green laid paper

Colored marker on paper

Black crayon on paper

Red marker and watercolor on paper

Charcoal on paper

Black and red marker and black pen on paper

Graphite on paper

Graphite on paper

Colored marker and pen on paper, adhesive, and black marker on paper

Black marker on paper