The Montaldo, Icarian Papers (1848-1910) contains correspondence, military, and other government documents that document the Montaldo family’s involvement in the Icarian Community, a socialist utopian society located in Nauvoo, Illinois and Icaria, Iowa from 1848-1895. Correspondents include Ignacio Montaldo, Perico Montaldo, Celina Montaldo, George Montaldo, Hortense Montaldo, Étienne Cabet, and A.A. Marchand.