his poster represents
an intermediate stage in the mechanical reproduction of
images. While the images of the implements and their
operators were derived from photographs, the details of
sky and hills were hand-painted onto the printing plates
in the traditional lithographic manner. Although hand
painting persisted in fine art printmaking, it yielded
to photographic techniques in commercial lithography.
his poster represents
an intermediate stage in the mechanical reproduction of
images. While the images of the implements and their
operators were derived from photographs, the details of
sky and hills were hand-painted onto the printing plates
in the traditional lithographic manner. Although hand
painting persisted in fine art printmaking, it yielded
to photographic techniques in commercial lithography.