"This book is an important contribution to comparative nonprofit studies, and it deserves to be carefully read and debated. It is an exemplary research project, offering an important and intriguing puzzle, a solid review and critique of alternative explanations, an interdisciplinary approach to theory-building and empirical testing, and original data. . . . It is no small challenge to offer an empirically rigorous and theoretically rich and coherent explanation of nonprofit sector development, and this work rises to that challenge admirably."—Nonprofit and Voluntary Sector Quarterly