This is a proposal for an administrative supplement to Integrating U.S. Fertility Surveys (R01 HD 053533). The purpose of the administrative supplement is to increase the eventual use and value of this public good by augmenting the documentation of harmonized variables beyond that proposed in the parent grant. This effort will enhance the interpretability of analyses, accelerate the tempo of scientific advance, and lead to new research. This goal is well within the scope of the parent project and will speed scientific progress in understanding changes and continuity in fertility and many aspects of families over five decades. The supplement will also contribute to job creation in Michigan, the state with the highest unemployment rate in the nation.