"Deviance Theory and the Sociology of Law," Faculty Seminar, London School of Economics, London, England, October, 1970. 

"Labeling Theory and the Conflict Perspective," Southwestern Polytechnic Institute, London, England, October, 1970. 

"The Supreme Court as a Source of Revolution in the U.S.," University of Bristol, Bristol, England, November, 1970. 

"The Political Economy of Corruption, n University of Uppsala, Uppsala, Sweden, March, 1971. 

"Appellate Court Decisions and Sociological Models," British Sociological Association Meetings, London, England, April, 1971. 

"Social Structure and the Law in Action" (series of six lectures and seminars), University of Belfast, Belfast, Northern Ireland, April, 1971. 

"Crime, Law, and Social Change," University of Durham, Durham, England, May, 1971. 

"The Criminal Law Process in Nigeria and America," Institute of Criminology, Cambridge University, Cambridge, England, May, 1971. 

"Corruption in Former Colonies" The Gases of the United States and Nigeria," All Souls College, Oxford University, Oxford, England, May, 1971. 

"The Political Economy of Crime," Institute of Criminology and Criminal Law, Oslo University, Oslo, Norway, May, 1972. 

"Functional and Conflict Theories of Deviance," Institute of Sociology, University of Uppsala, Uppsala, Sweden, May, 1972. 

"A Conflict Model of Crime and Criminal Law," American Criminological Association Meetings, Caracas, Venezuela, November, 1972. 

"Crime, Power and Conflict" Department of Sociology, Indiana University, Bloomington, Indiana, April, 1973. 

"Criminological Theory and Sociological Paradigms," Institute of Criminal Law and Criminology, University of Oslo, Oslo, Norway, May, 1973. 

"Watergate and the Role of Corruption in American Politics," Institute of Criminal Law and Criminology, University of Oslo, Oslo, Norway, May, 1973. 

"Sociological Theory and the Sociology of Law," paper read for the Research Section on the Sociology of Law, International Sociological Association Meetings, Toronto, Ontario, Canada, August, 1974. 

''The Underdevelopment of Recent Developments in the Social Psychology of Deviance," International Sociological Association Meetings, Toronto, Ontario, Canada, August, 1974. 

"Political Corruption and the Sociology of Law," Institute of Organizations and Industrial Sociology, University of Copenhagen, Copenhagen, Denmark, November 24-27, 1974. 

"Bias in Criminology: The Case of Heroin and Opium." Institute of Sociology, Nijmigen University, Nijmigen, Netherlands, January 15-16, 1975. 

"Opium and Imperialism," Institute of Criminology, University of Stockholm, Stockholm, Sweden, February 24, 1975. 

"Crime in Capitalist and Socialist Societies," Amsterdam Festival of Social Sciences, April 10, 1975. 

"Criminological Theory and Recent History," University of Graz, Graz, Austria, April 14, 1975. 

"Criminal Law and Social Welfare," Institut fur hoher Studien, Vienna, Austria, April 15, 1975. 

"Models of Criminal Law Creation," Ludwig Boltzmann Institut fur Kriminalsoziologie and Institut fur Gesellschaftspolitick, Vienna, Austria, April 17, 1975. 

"Watergate and the Political Economy of Crime," European Conference on Deviance, Amsterdam, September 9, 1975. 

"Crime as a Political Weapon," School of Law, University of Uppsala, Uppsala, Sweden, October 23, 1975. 

"Demystifying Crime and Critical Criminology," Simon Frazer University, Vancouver, British Columbia, Canada, October 27, 1975. 

"Watergate: A Study in Crime and Politics," Faculty of Social Sciences, University College, Cardiff, Wales, January, 1976. 

"Crime in Capitalist and Socialist Societies," and "Crime Rates and Crime Myths," at the Institute of Criminology, Stockholm University, Stockholm, Sweden, April, 1976. 

''International Cooperation on Organized Crime," School of Law, University College, Cardiff, Wales, November, 1976. 

"Markets and Opium," Department of Sociology, University of Arizona, Tucson, Arizona, November, 1976. 

''Business and Economic Crime in Sweden," Institute of Criminology, Stockholm University, March, 1977. 

American and Swedish Organized Crime," Institute of Sociology and Law, Uppsala University, Uppsala, Sweden, March, 1977. 

"The Creation of Law," Institute of Sociology and Law, Lund University, Lund, Sweden, April, 1977. 

"Contradictions and Conflicts in Law Creation," International Sociological Association, Uppsala, Sweden, August, 1978. 

"Old Wine in New Bottles," American Sociological Association, San Francisco, California, September, 1978. 

"Comment on Witchcraft and Law," African Studies Association, Baltimore, Maryland, 1978. 

"The Political Economy of Crime in America," Southern Oregon College, Ashland, Oregon, July, 1979. 

"Bureaucratic Corruption and Organized Crime," Bureau of Land Management, Medford, Oregon, July, 1979. 

"The Internationalization of Organized Crime," Institute for Policy Studies, Muenster, Germany, September, 1979. 

"Naive Critics of a Simple-minded Marxism," American Society of Criminology, Philadelphia, November, 1979. 

''Illegal Business and White Collar Crime," International Conference on "Watergate and the Politics of Organized Crime" and "The Dialectics of the new Criminology," School of Criminal Justice, California State University, San Diego, May 6-7, 1980, and California State University, Sacramento, March 10-11, 1980. 

"The Politics of Organized Crime," International Platform Association, Washington, D.C. August, 1980. 

"The Law, the State and Organized Crime in America," University College, Cardiff, Wales, March, 1981. 

"Crime Rates and Criminal Politics, n the Home Office, London, April, 1981. 

"Crime Myths and Official Smokescreens," Institute of Criminology, Cambridge University, Cambridge, England, April, 1981. 

"Organized Crime and American Politics,'' Annual Meeting National Alcohol Control Board, Miami, Florida, May, 1981. 

"The Politics of Organizing Crime," in Southern Oregon College, Ashland, Oregon, November, 1981. 

"Illegal Businesses and Political Campaigns," Meridian Junior College, Meridian, Mississippi, February, 1982. 

"Illegal Businesses and American Politics," University of North Carolina, Greensboro, NC February, 1982. 

"The Development of and Prospects for a Radical Criminology," Temple University, Philadelphia, February, 1982. 

"Misconceptions of Crime and Criminal Politics," paper presented at the International Sociological Association Meetings, August, 1982. 

"The Politics of Crime," Public lecture, University of Dayton, Dayton, Ohio, November, 1982. 

''The Limits of Criminal rust ~ A; le`;cure, university 01 Dayton, Sanctions," at the Frankfurt international Conference on Crime and Criminal Law,Frankfurt, Germany, February, 1983. 

"Law, Crime and Politics," Public lecture, Middlesex Polytechnic Institute, London, England, April, 1983. 

"Drug Abuse, Alcohol Abuse and Crime Control," International Conference on Drug and Alcohol Abuse, Torino, Italy, May, 1983. 

''The Crime Menace," paper delivered at the American Sociological Association, Detroit, Michigan, September, 1983. 

"Crime Rates and Official Smokescreens," Public lecture, University of Southern Maine, Portland, Maine, October, 1983. 

Chairperson and Discussant on panel, "Law and Society," American Society of Criminology, Denver, Colorado, November, 1983. 

"Piracy and Law," International Sociological Association, Boston, Massachusetts: January, 1984. 

"State Organized Crime," American Society of Criminology, San Diego, California, November, 1985. 

"The Sociology of Law and the Sociology of Crime," Alberta Conference, Socio~Legal Studies, Alberta, Canada, November, 1985. 

"Politics and Crime," University of Manitoba, Winnipeg, Manitoba, Canada, November, 1985. 

"The Interface of Social Theory and Sociology of Law," University of Winnipeg, Manitoba, Canada, November, 1985. 

"Crime, Politics and Drugs." SUNY New Paltz, November, 1986. 

"Organizing Crime and Politics", Keynote Address, Indiana University Symposium on Criminal Justice, March, 1987. 

"State Terrorism and State Crime", Department of Sociology, University of North Carolina, Charlotte, April, 1987. 

"The Politics of State and Organized Crime", Fortunoff Lecture, New York University School of Law, April, 1987. 

"Sociological Theory and Political Practice," paper delivered at the D.C. Sociological Society, November 3, 1987. 

"On State Organized Crime and Sociological Theory" paper delivered at the European Group for the Study of Deviance and Control, Vienna, Austria, September 14, 1987. 

''Legalizing Drugs in America: The Facts and the Fictions," Institute for Policy Studies, Washington, D.C. September, 1988. 

"Should Drugs Be Legalized?", Mayor Schmoke's Working Group, Baltimore, Maryland, October, 1988. 

"State Organized Crime and Criminological Theory," Presidential Address, American Society of Criminology, Chicago, November, 1988. 

"The Political Economy of Drugs," International Conference on Drugs and Crime, Hong Kong University, Hong Kong, December, 1988. 

"Criminological Theory and Crimes of the State," Department of Sociology, University of California, Santa Barbara, March, 1990. 

"A War on Drugs or a Race War?" Annual Meeting of the California ACLU, Santa Barbara, California, March, 1990. 

"Reflections on Criminological Theory and Post-Modernism, n American Society of Criminology, November 10, 1991. 

"Race and Incarceration in the Crossbar Jail," (with Barry Hannah American Society of Criminology, November 11, 1992 

"The Use of Historical Data in Sociological Research," Texas Christian University, March, 1992. 

"Criminological Theory and the Logic of Science," Texas Christian University, March, 1992. 

"State Organized Crime: How States Violate Their Own Laws,'t Drexel University, May 4, 1992. 

"The Transformation of American Criminal Law'' Keynote Address, Legal Studies Conference, Melbourne, Australia, January 1, 1993. 

"Tell My Mom I Won't Be Home Tonight: Tough Guys and Tough Laws," Presidential Address, Society for the Study of Social Problems, Miami, August 12, 1993. 

"Historical Development of American Criminal Justice System, U.S.I.A., International Exchange Program, U.S. Criminal Justice System, April 6, 1995: Washington, DC. 

"American Apartheid: Policing the Unruly Classes," Keynote Address, Hawaii Sociological Association, March 25, 1995: Honolulu, Hawaii. 

"U.S. Drug Policies and the Sociology of Law," Salisbury State University Sociological Society, October 5, 1995: Salisbury, Maryland. 

"Russian Organized Crime and the Transition from Planned to Market Economies," Austrian Academy of Social Sciences, Vienna, Austria, May, 1996. 

''From Russia With Love: Russian Organized Crime and the U.S. Mafia," Address to George Washington University Alumni, Denver, Colorado, September, 1996. 

''The Drug Wars: Who's Winning, Who's Losing," Northern Arizona University, September, 1996.