Acknowledgments

The authors gratefully acknowledge support from the Minnesota Population Center (P2CHD041023), funded through a grant from the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD). We also wish to thank Ran Abramitzky, Leah Boustan, and Myera Rashid, who published their census crosswalks online for public use. This project was also supported by a research grant from the Eunice Kennedy Shriver National Institute of Child Health and Human Development (R01-HD082120-01Q3).