The appendices in this volume are associated with the Descriptive Study of the Early Learning Mentor Coach Grant Initiative (Howard et al., 2012) report. They provide additional details related to the study design, the data collection efforts, and data quality assurances. Furthermore, supplemental analyses and findings are presented in these appendices. The topics that the appendices address are as follows: Additional background on the ELMC Initiative. The initial and final research goals and study questions, the types of analyses, and the data sources. The data collection protocols and recruitment procedures, including the incentives provided and the grantees contacted. The data quality assurance procedures and interviewer training, as well as quality control measures. Additional analyses and findings (i.e., subgroup and bivariate correlation analyses). For each appendix, we provide a brief summary of the information found therein and, as appropriate, its significance to the study. (author abstract)