John Irwin (1929 - 2010) was known internationally as an expert in the American prison system. He earned his Ph.D. in Sociology from the University of California Berkeley and taught as a professor at San Francisco State University. He is the author of "The Felon "(UC Press), "Scenes", "Prisons in Turmoil", "It's About Time: America's Imprisonment Binge" (with James Austin), "Lifers: Seeking Redemption in Prison" and "The Warehouse Prison: Disposal of the New Dangerous Class".