Introduction "The Plessy Prison" -- De Facto to De Jure: Transportation Segregation in the South from the Civil War to the 1890s -- Plessy in Louisiana: The Test Cases -- Plessy in Louisiana: The Constitutional Clash -- The Constitutional Environment: Lost Origins and Judicial Deference -- The Intellectual Environment: Racist Thought in the Late Nineteenth Century -- The Transportation Law Environment: Access by Leave, Not Right -- Plessy Before the United States Supreme Court -- The Court Decides: Jim Crow Affirmed -- Speaking to the Future.