Friedrich Krupp Administration Building and Exhibition Hall, Hugel Park, Essen, Germany (Innentreppen 5 und 6 [Interior stairs nos. 5 and 6]. Elevations, sections, plans, isometric views.)
Ludwig Mies van der Rohe
American, born Germany. 1886–1969
Pencil, Ink on acetate
Mies van der Rohe Archive, gift of the architect