The Crusade against White Slavery Published by Clifford B. Roe and B. S. Steadwell in 1911, The Great War on White Slavery campaigned against prostitution and the criminals who lured impoverished young women into what they called “the human stockyards . . . for girls.” As an assistant state’s attorney in Chicago, Roe prosecuted more than 150 cases against sex traffickers. He exemplified progressivism’s moral reform impulse. © Mary Evans Picture Library/The Image Works