During the 1960s, Penn planning looked in two directions, toward contextualism in the work of the Philadelphia School, and toward confrontation in the work of most of the architects from outside of the region. These three residential towers take the latter, more conventionally modern course, in a great vertical T-plan slab of poured-in-place concrete that seems to grow larger at the top, recalling modernism's heroic age. This residence is named for Gaylord Probasco Harnwell, President of the University, 1953 to 1970.