Mark A. Lause is a professor of history at the University of Cincinnati and the author of a dozen books. Most of his work explores and documents the economic, social, and political possibilities that came clearly into focus in the nineteenth century. It often approached the subject from neglected directions—the contemporary working class movements, land reform, secret societies, and insurgent politics, as well the challenge of bohemianism and spiritualism to gender roles. He has episodically participated in various radical organizations, starting with the Students for a Democratic Society, and is currently a member of the Democratic Socialists of America.