In the mid- to late 1960s and early 1970s, the American photographer Harry Callahan made a series of multiple-exposure images incorporating appropriated pictures from soft-core pornographic magazines. This was not his sole deployment of appropriated imagery: in the 1950s, he had produced a series for which he took images from women’s fashion magazines, and from the 1960s to the 1980s he made another series that incorporated pictures from his television screen. Despite this sustained interest, however, Callahan is not regarded as an appropriation artist. His work is generally seen as a lyrical modernism concerned almost exclusively with formal issues and personal expression.