JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. Clark University is collaborating with JSTOR to digitize, preserve and extend access to Economic Geography. This paper examines the pattern of manufacturing headquarters in a postindustrial urban area, the Dallas-Fort Worth SMSA. Recent change in the national system of corporate headquarters is examined in relation to the external control issue. A survey of manufacturing headquarters assesses the relative importance of indigenous versus external sources of headquarters over time, and intra-metropolitan location patterns are analyzed by size of firm and industry type. The impact of corporate headquarters on their local environment is also assessed. * The author wishes to express his appreciation to Deborah Jones and Revis Smith for their assistance with the survey of firms, and to Martin Katzman for his thoughtful comments on an earlier draft of this paper.