Friedrich Krupp Administration Building and Exhibition Hall, Hugel Park, Essen, Germany (Schnitte durch Hauptkern und Grundriss Hauptkern im Kanalgeschoss [Sections through main core and floor plan of main core at sub-basement].)
Ludwig Mies van der Rohe
American, born Germany. 1886–1969
Pencil, ink on acetate
Mies van der Rohe Archive, gift of the architect