The growth of the U.S. economy over the nineteenth century was characterized by a sharp acceleration in the rate of inventive activity and a dramatic rise in the relative importance of highly specialized inventors as generators of new technological knowledge. Relying on evidence compiled from...

During the Second Industrial Revolution of the late nineteenth and early twentieth centuries, Midwestern cities were important centers of innovation. Cleveland, the focus of this study, led in the development of a number of key industries, including electric light and power, steel, petroleum,...

We argue that the emergence of a well-developed market for patented technologies over the late nineteenth and early twentieth centuries facilitated the emergence of a group of highly specialized and productive inventors by making it possible for them to transfer to others responsibility for...