In the course of his exploration of independent historical societies, Walter Whitehill has visited private and public institutions throughout the country, finding both a diversity of forms and a unity of purpose. The author’s verve and candor make his book a stimulating picture of these societies and their fundamental contribution to American historical scholarship. His insights into developing trends will help to define their role and to shape their future course; his authoritative treatment of the present context provides a basis for closer collaboration among the societies and for more efficient use of their facilities.