The Letters of Sacco & Vanzetti written during the seven years (1920-1927) of their imprisonment - Frankfurter, Marion Denman, 1890-1975; Jackson, Gardner, 1896-1965; Sacco, Nicola, 1891-1927; Vanzetti, Bartolomeo, 1888-1927 (Secaucus, NJ : Citadel Press, 1956)