These fertility tables, produced by the National Institute of Child Health and Development, National Institutes of Health, were compiled by Robert L. Heuser. They are tabulated by single year of age and birth cohort, by parity and race. There are 3 series of data: (1) Central birth rates by cohort and age (Cohorts 1868 through 1966). (2) Central birth rates by period and age (Years 1917 through 1980). And (3) Cumulative birth rates by cohort to exact age x. (Cohorts 1867 through 1966).
