1. The period of the great epidemics in the United States (1800-1875);Smillie,1952
2. Report on the sanitary condition of the laboring population of Great Britain;Chadwick,1842
3. Vital statistics rates in the United States 1900-1940;US,1943
4. Vital statistics rates in the United States 1940-1960;National Center for Health Statistics,1968