Peter Dreier is the E.P. Clapp Distinguished Professor of Politics and chair of the Urban & Environmental Policy Department at Occidental College. He writes regularly for the Los Angeles Times, American Prospect, The Nation, and other publications, mostly about politics but also about baseball. He has written or coauthored five books, the most recent of which is The 100 Greatest Americans of the 20th Century: A Social Justice Hall of Fame (Nation Books). He is currently writing his next book, with Robert Elias, entitled Rebels of the Diamond: The Baseball Reformers and Radicals Who Shook Up the Game On and Off the Field.