Recreation and Cultural Buildings, Berlin-Tiergarten, 1929-1930: Tunnel: plan and section, 1:1000,1:100

Photomechanical print in black and green ink on green paper

Photomechanical print in red and black inks on paper

Photomechanical print with graphite and wash on paper

Photomechanical print with ink, wash, and gouache on paper

photomechanical print with blue wash and collage elements on off-white wove paper, mounted overall to gray board; corrections added in white gouache

Photomechanical print in red and black inks on off-white wove paper

Relief halftone and letterpress printed in black and orange inks on coated off white wove paper