Prefabricated Copper Houses, 1931-1932: Building type M3: upper floor beam layout, 1:20

Photomechanical print with red ink and typewritten text on paper

Photomechanical print with applied type on paper

Photomechanical print in red and black inks on white paper

Photomechanical print in gray ink on white paper

Photomechanical print in black ink on off-white card

Photomechanical print in black ink on white paper