Addams' construction of womanhood involved daughterhood, sexuality, wifehood, and motherhood. In both of her autobiographical volumes, "Twenty Years at Hull-House" (1910) and "The Second Twenty Years at Hull-House" (1930), Addams's gender constructions parallel the Progressive-Era ideology she championed. In "A New Conscience and an Ancient Evil" (1912) she dissected the social pathology of sex slavery, prostitution and other sexual behaviors among working class women in American industrial centers during 1890–1910. Addams's autobiographical persona manifests her ideology and supports her popularized public activist persona as the "Mother of Social Work," in the sense that she represents herself as a celibate matron, who served the suffering immigrant masses through Hull-House, as if they were her own children. Although not a mother herself, Addams became the "mother to the nation," identified with motherhood in the sense of protective care of her people.