Research Project on Economical Apartment Design, 1930: Building type IIIb: drainage system

Photomechanical print with ink, wash, and gouache on paper

Photomechanical print in black and red inks on white paper

Photomechanical print with red pencil on paper

Photomechanical print with wash on paper

Black ink on off-white card, magnetic band, in plastic sleeve

Photomechanical print with wash, graphite, and ink on paper

Photomechanical print in black ink on brown paper

Photomechanical print

Photomechanical print with red ink on paper