Tabla de Contenidos: “…Introduction : the university's century -- The Humboldtian contract and the federalist origins of the research university -- Gottingen at Baltimore : the stakes of knowledge exchange -- Meet me in St. Louis : dilemmas of the knowledge economy -- Reluctant innovators : change from the margins -- An "aristocracy of excellence" : the rise of the professions -- Carnegie, capital, and the Kaiser -- World War I and the invention of academic freedom -- The "hour for experiment" in New York and Frankfurt -- 1933 : annus horribilis -- 1933 : annus mirabilis -- Conclusion : old dilemmas, new contracts…”