Book excerpt: Tracing the evolution of the library as a modern institution from the late eighteenth century to the digital era, this book explores the diverse practices by which Americans have shared reading matter for instruction, edification, and pleasure. Writing from a rich variety of perspectives, the contributors raise important questions about the material forms and social shapes of American culture. What is a library? How have libraries fostered communities of readers and influenced the practice of reading in particular communities? How did the development of modern libraries alter the boundaries of individual and social experience, and define new kinds of public culture? To what extent have libraries served as commercial enterprises, as centers of power, and as places of empowerment for African Americans, women, and ...