1. Mortality From Selected Causes by Marital Status—United States, 1949–1951,1956
2. Mortality Lowest in Married Population;Statistical Bulletin of the Metropolitan Life Insurance Company,1957
3. 1950 Census of Population, Vol. II, Characteristics of the Population, Part 1, U. S. Summary, Table 102.
4. Marital Status, Number of Times Married, and Duration of Present Marital Status: April, 1948,1949