Factory and Office Building for Werkbund Exhibition, Cologne, 1914: Perspective

Colored marker on paper

Graphite on paper

Graphite on paper

Graphite on paper

Ink on paper

Black and red marker on paper

Blue and black marker on paper

Colored marker and blue pen on paper

Black crayon on paper

Graphite on cream wove paper

Ink, graphite, and portion of applied label on paper

Graphite on paper