Preface -- Introduction -- 1 An Ecology of Knowledge: Technical and Institutional Developments in Computing, 1900-1945 -- 2 Biography and the Circulation of Knowledge: John Mauchly and the Origins of Electronic Computing -- 3 From Ecology to Network: John von Neumann and Postwar Negotiations over Computer-Development Research -- 4 Knowledge and Organization: Redefining Computer-Development Research at the National Bureau of Standards -- 5 Research and Rhetoric: Jay Forrester and Federal Sponsorship of Academic Research -- 6 Institutions and Border Crossings: Cuthbert Hurd and His Applied Science Field Men -- 7 Voluntarism and Occupational Identity: The IBM Users' Group, Share -- 8 Research and Education: The Academic Computing Centers at MIT and the University of Michigan -- 9 Discipline and Service: Research on Computer Time Sharing at MIT and the University of Michigan -- Conclusion -- Notes -- References -- List of Books -- Index.