-Silva and Slaughter have made a valuable contribution to the history of North American social science. The formations of the American Economic Association( 1885), the American Political Science Association (1903), and the American Sociological Society (1905, now the American Sociological Asssociation) are seen as vehicles to expand scientific `expertise.' Buttressed by an emerging credentialling system, graduate education, and an embrace of centrist economic policies and attendant ideologies, the leaders of these associations are seen as dislodging the more traditional eastern-based American Social Science Association. ... The authors' discussion of the part played by the early social science leadership in the formation of the American Association of University Professors (AAUP) and the trade-off between the defense of `expert' academic freedom and civil liberties is interesting but disturbing. —Choice