Production Engineer, 1924
II/12/1
Construction Engineer, c. 1928
II/12/2
Laboratory Technician, 1938
II/12/3
Draftsman, 1938
II/12/4
Production Engineer, 1933
II/12/5
Engineer, 1928
II/12/6
Inventor and Dadaist [Raoul Hausmann], 1929
II/12/7
Engineer and Advertising Manager, c. 1935
II/12/8