Pressure groups in Congress / Emanuel Celler -- The Bureaucracy in pressure politics / J. Leiper Freeman -- Litigation as a form of pressure group politics / Clement E. Vose -- Management in politics / Robert F. Lenhart and Karl Schriftgiesser -- Farmers in politics / Wesley McCune -- Organized labor in politics / James B. Carey -- How pressure groups operate / Henry A. Turner -- Political parties and pressure group politics / Hugh A. Bone -- Political interest groups as policy shapers / Richard W. Gable -- The Regulation of pressure groups and lobbyists / Belle Zeller -- Interest group theory in political research / Oliver Garceau -- Nature and prospects of political interest groups / Alfred de. Grazia -- Pressure groups and the American tradition / Murray S. Stedman -- Group representation in Britain and the United States / Samuel H. Beer -- Pressure groups in France / Henry W. Ehrmann -- Pressure groups, foreign policies, and inetrnational politics / Donald C. Blaisdell.