Academic freedom for the professoriate in America is discussed, based on quantitative analysis of almost a thousand cases from the files of the American Association of University Professors (AAUP). The cases represent a large sample of the academic freedom and tenure conflicts that developed during a period of more than four decades (1913-1957). The case files examined contain biographic details, definition of the situation, the professor's view, the administration's view, and AAUP perception of the situation. Problems frequently identified as core reasons for the disputes are faculty behavior, political opinions or activities of faculty, educational policy disputes, personality clashes, and faculty morals. A correlation between the size of the institution and the amount of reported complaints about academic freedom are reported; 61 percent of the complaints came from larger universities. Personal characteristics of the complaints rather than characteristics of the institutions and disciplinary fields are also correlated with dispute incidence; i.e., social scientists are more prone to see academic freedom overtones. Appendices and tables contain statistics of academic freedom cases over time periods, issues and behavior in the cases, institution size compared to number of cases, and academic freedom violations. (LC)