David Nasaw is an American author, biographer and historian who specializes in the cultural and social history of early 20th Century America. Nasaw is on the faculty of the Graduate Center of the City University of New York, where he is the Arthur M. Schlesinger, Jr. Professor of History. In addition to writing numerous scholarly and popular books, he has written for publications such as the Columbia Journalism Review, American Historical Review, American Heritage, Dissent, The New Yorker, The New York Times, The Wall Street Journal, Slate, The London Review of Books, and Condé Nast Traveler. Nasaw has appeared in several documentaries, including The American Experience, 1996, and two episodes of the History Channel's April 2006 miniseries 10 Days That Unexpectedly Changed America: "The Homestead Strike" and "The Assassination of President McKinley". He is cited extensively in the US and British media as an expert on the history of popular entertainment and the news media, and as a critic of American philanthropy.