Research Project on Economical Apartment Design, 1930: Building type IIb, drainage system: plan, 1:50

Photomechanical print with ink on paper

Photomechanical print with colored pencil on paper

Photomechanical print with wash on paper

Photomechanical print with colored pencil on paper

Photomechanical print with ink, colored washes, and graphite on paper

Photomechanical print in black and red inks on white paper