1. Introduction
2. Direct control, the state, and the large firm
3. The manufacturing conception of control
4. The sales and marketing conception of control
5. The emergence of the Celler-Kefauver Act, 1938-1950
6. The impact of the Celler-Kefauver Act, 1948-1980
7. The finance conception of control
8. Diversification in large firms
9. The social construction of efficiency
Appendix A : Industrial location of cartels and mergers
Appendix B : Survival of merged firms, 1895-1919
Appendix C : The data set
Appendix D : Models for the 100 largest firms, 1919-1970
Appendix E : Antitrust enforcement and mergers, 1950-1980