30, 1996. 45-51 The Bagel Man: Paul Feldman was looking for a research economist to take an interest in his data, and brought himself to Steven Levitts attention. (Sev- eral other scholars had passed.) Levitt and then Dubner subsequently visited Feldmans bagel operation near Washington, D.C. Their research led to an article that was substantially similar to the version of the story published here: Stephen J. Dubner and Steven D. Levitt, "What the Bagel Man Saw," The New York Times Magazine, June 6, 2004. Levitt is also writing an aca- demic paper about Feldmans bagel operation. / 47 The "Beer on the Beach" study is discussed in Richard H. Thaler, "Mental Accounting and Consumer Choice," Marketing Science 4 (Summer 1985), pp. 119-214; also worth reading is Richard H. Thaler, The Winners Curse: Paradoxes and Anomalies of Economic Life (New York: Free Press, 1992).     2. HOW IS THE KU KLUX KLAN LIKE A GROUP OF REAL-ESTATE AGENTS?   55-66 unmasking the ku klux klan: A number of excellent books have been written about the Ku Klux Klan. For general history, we relied most heavily on Wyn Craig Wade, The Fiery Cross: The Ku Klux Klan in America (New York: Simon & Schuster, 1987), and David M. Chalmers, Hooded Ameri- canism: The First Century of the Ku Klux Klan, 1865-1965 (Garden City, NY: Doubleday, 1965); see also Stetson Kennedy, After Appomattox: How the South Won the War (Gainesville: University Press of Florida, 1995). Of most particular interest to us was Stetson Kennedy, The Klan Unmasked (Boca Raton: Florida Atlantic University Press, 1990), which was originally pub- lished as I Rode with the Ku Klux Klan (London: Arco Publishers, 1954). But Stetson Kennedy himself is probably the greatest living repository of Klan lore. (For more information, see www.stetsonkennedy.com; also, many of Kennedys papers are housed in the Schomburg Center for Research in Black Culture in New York.) The authors visited Kennedy at his home near Jack- sonville, Florida, interviewing him and availing ourselves of his extensive collection of Klan paraphernalia and documentation. (We also tried on his Klan robes.) We are most grateful for his cooperation. The Harvard econo- mist Roland G. Fryer Jr. accompanied us; he and Steven Levitt are currently collaborating on a series of papers about the Ku Klux Klan. It should be noted that Fryer was driving the rental car as we first sought out Kennedys