Research Project on Economical Apartment Design, 1930: Building type IIb: isometric, steel construction. 1:10

Photomechanical print in gold, orange and green inks on paper

Photomechanical print in red and black inks on paper

Photomechanical print with gouache on paper

Photomechanical print with red ink and wash on paper

Photomechanical print with colored pencil on paper

Photomechanical print and gouache on paper

Photomechanical print in blue and orange inks on paper