For the analysis of fertility trends the author draws upon official data and presents a preview of some of the materials in P. K. Whelpton's forthcoming monograph: Cohort Fertility: Native White Women in the United States. His discussion of trends in fertility differentials since 1940 is based mainly upon the Census Bureau's periodic releases giving fertility ratios among groups sampled in the Current Population Survey during the past few years.
No takes yet. Share an insight, caveat, or question.
Clyde V. Kiser (1952) studied this question.