Widely regarded as the most influential curator of the second half of the twentieth century, Harald Szeemann (1933-2005) is associated with some of the most important artistic developments of the postwar era. A passionate advocate for avant-garde movements like Conceptualism and Postminimalism, he collaborated with artists such as Joseph Beuys, Bruce Nauman, Richard Serra, and Cy Twombly, developing new ways of presenting art that reflected his sweeping...