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

Colored crayons on paper

Black crayon on off-white wove paper

Colored marker on paper

Colored marker on paper

Black crayon on paper and mounted

Colored marker on paper

Graphite on paper

Graphite and colored crayon on off-white wove paper

Graphite on off-white wove paper

Black and red marker on paper

Graphite and watercolor on paper

Watercolor on paper