Halle Civic Center, Museum, and Stadium, Halle, 1927-1928: Civic center, acoustical study: section, 1:200

Graphite on paper

Graphite with blue and yellow crayon on paper and mounted

Black crayon on paper

Graphite on paper

Graphite on paper

Graphite on paper

Black and red marker on paper

Black ink and watercolor on off-white wove paper

Black crayon on paper

Colored crayons on paper and mounted

Graphite on paper

Colored marker on paper