His first book, Perversion for Profit: The Politics of Pornography and the Rise of the New Right, recently arrived in paperback, alongside his new book, Obscenity Rules: Roth v. United States and the Long Struggle over Sexual Expression, which combines a legal history of obscenity doctrine with a cultural history of the poet, publisher, and pornographer Samuel Roth, whose 1957 Supreme Court established the obscenity doctrine that still fundamentally governs American sexual expression today.