In America during the 1960s, sculpture as an artistic practice underwent a series of radical transformations. Artists including Lee Bontecou, Claes Oldenburg, Lucas Samaras, H. C. Westermann, and Bruce Nauman offered alternative ways of imagining the three-dimensional object. The objects they created were variously described as erotic, soft, figurative, aggressive, bodily, or, in the words of the critic Lucy Lippard, "eccentric." Looking beyond the...