To study how American scholars have written about the history of France over the course of the last hundred years is, in certain ways, to appraise the evolving contours of American liberalism. For American historians who specialize in the past of France, its empire, or its wider continental context, the twentieth century saw a steady growth of institutional optimism. Although conservative suspicion against popular sovereignty and universal Enlightenment reason once markedly influenced the profession, since the late 1950s the American study of France has been increasingly associated with an advancement of progressive-minded ideals. Yet, reflections over the past thirty years on the development of French history in American universities have been curiously silent on the nature or evolution of liberalism within their field. Its contours and challenges over the course of the twentieth century, as a distinct intellectual focus within the wider American Academy, remain in some ways terra incognita.