2019—Akhil Reed Amar, Sterling Professor of Law and Political Science, Yale University
2018—Hilarie Bass, president of the American Bar Association
2017—The Hon. Solomon Oliver Jr., chief judge, U.S. District Court for the Northern District of Ohio
2016—Paulette Brown, president of the American Bar Association
2015—Earl F. "Marty" Martin, president-elect of Drake University
2014—Guy R. Cook, president of the Iowa State Bar Association
2013—The Hon. John A. Jarvey, chief district court judge, U.S. District Court for the Southern District of Iowa
2012—The Hon. Joel D. Novak, district court judge, Fifth District of Iowa
2011—William T. Robinson III, president-elect of the American Bar Association
2009—Stephen J. Rapp, ambassador-at-large, Office of Global Criminal Justice, U.S. Department of State
2008—Robert Grey Jr., president of the American Bar Association
2007—Tom Vilsack, governor of Iowa
2006—Justin Webb, chief Washington correspondent, BBC Radio
2005—Jan R. Schlichtmann, attorney and activist
2004—The Hon. Alex Kozinski, chief judge, U.S. Court of Appeals for the Ninth Circuit
2003—John Kerry, U.S. Senator, Massachusetts
2002—Tom Harkin, U.S. Senator, Iowa
2001—John Edwards, U.S. Senator, North Carolina
2000—The Hon. Arthur A. McGivern, chief justice, Iowa Supreme Court
1999—The Hon. Richard Matsch, chief judge, U.S. District Court for the District of Colorado
1998—J. Robert Kerrey, U.S. Senator, Nebraska
1997—Janet Napolitano, U.S. attorney for the District of Arizona
1996—James A. Leach, U.S. Representative, Iowa
1995—Roberta Cooper Ramo, president-elect of the American Bar Association
1994—Janet Reno, U.S. attorney general
1993—The Hon. A. Leon Higginbotham Jr., U.S. Court of Appeals for the Third Circuit
1992—Michael G. Gartner, president of NBC News
1991—Richard Thornburgh, U.S. attorney general
1990—Patricia Schroeder, U.S. Representative, Colorado
1989—William S. Sessions, director of the FBI
1988—James McElhaney, Joseph C. Hostetler Professor of Trial Advocacy at Case Western Reserve University Law School
1987—Dale L. Bumpers, U.S. Senator, Arkansas
1986—Irving Younger, Marvin J. Sonosky Professor of Law at University of Minnesota Law School
1985—The Hon. Sandra Day O’Connor, justice of the Supreme Court of the United States
1984—Donald Kaul, columnist for The Des Moines Tribune
1983—Robert E. White, U.S. ambassador to El Salvador
1982—Charles Percy, U.S. Senator, Illinois
1981—F. Lee Bailey, nationally renowned trial attorney
1980—William Webster, director of the FBI
1979—William Proxmire, U.S. Senator, Wisconsin
1978—Gerald Gunther, William Nelson Cromwell Professor of Law at Stanford University Law School
1977—William Colby, director of the CIA
1976—Chesterfield H. Smith, president of the American Bar Association
1975—Charles Kuralt, CBS news correspondent
1974—Elliott Richardson, U.S. secretary of defense and former U.S. attorney general
1972—Mark Hatfield, U.S. Senator, Washington
1968—The Hon. Charles S. Desmond, chief judge, New York Court of Appeals
1967—Emile T. Berman, defense attorney
1966—Percy Mossle, defense attorney
1965—Thomas S. Lambert Jr., prosecution counsel at the Nuremberg Trials
1964—Bert H. Early, executive director of the American Bar Association
1963—Sylvester C. Smith, president of the American Bar Association
1960—The Hon. Thomas Clark, justice of the Supreme Court of the United States and former U.S. attorney general
1958—William B. Lockhart, dean of the University of Minnesota
1952—Howard L. Barkdull, president of the American Bar Association
1951—Albert J. Harno, University of Illinois Law School
1950—Luther Hill, The Des Moines Register and Tribune publisher
1949—Frank E. Homan, president of the American Bar Association
1948—The Hon. Maynard E. Pirsig, justice of the Minnesota Supreme Court and professor at the University of Minnesota
1947—Wayne Morse, U.S. Senator, Oregon
1941—The Hon. Charles F. Wennerstrum, justice of the Iowa Supreme Court
1940—Harley Stipp, president of the Iowa State Bar Association
1916—The Hon. William H. McHenry, judge