1. Sommario di statistiche storiche italiane, 1861–1955 [henceforth Sommario] (Rome, 1957), p. 65.
2. Edelstein , Overseas Investment, pp. 313–14.
3. Gould , “European Inter-Continental Emigration,” p. 82.
4. Coletti , “Dell'emigrazione,” pp. 14–15, 38, 74.