Abstract
In this article, I pursue two related goals. First, I aim to put theory back into our picture of the development of the American human sciences during the Cold War. While historians have rightly highlighted the empiricist methodologies employed by postwar human scientists, I show how an influential group of social scientists, led by the sociologist Talcott Parsons, attempted to establish theorizing as the primary means of interdisciplinary inquiry. My second goal is to show that the “abstract” theory envisioned by Parsons and his followers can and should be studied as a material practice.