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

Graphite on paper

Black fiber-tip ink on off-white wove paper

Black crayon on paper

Colored crayons on paper and mounted

Black crayon on paper

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Colored marker on paper

Graphite on paper

Graphite on paper

Ink and applied typescript on paper

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Graphite and colored pencil on paper