Preparation and documentation of the CMGPD-SC for public release via ICPSR DSDR was supported by the National Institutes of Health, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) Grant no. R01 HD070985 "Multi-generational Demographic and Landholding Data: CMGPD-SC Public Release." Contents are solely the responsibility of the authors and do not necessarily represent the official views of the NICHD. Previous versions of this paper were presented at the Population Association of America, San Diego, California, on May 2, 2015, and at the European Society for Historical Demography, Leuven, Belgium, in September 2016. We are grateful to the discussants and audience members for their comments and suggestions. We also appreciate the support and suggestions from members of the Lee-Campbell research group.