This guide describes and demonstrates the integration of Child Care Development Fund (CCDF) data on children receiving the subsidy with data collected from individuals' interactions with the child welfare system, performance in the formal education system, encounters with the juvenile and adult justice systems, their use of health and mental health services, their use of public assistance as an adult, homelessness assistance, and birth/death records, in the compilation of lifelong narratives of individual citizen encounters with public education, public assistance, public health services, and health insurance. Descriptions of the types and sources of administrative data are described for the purpose of guiding the formation of Integrated Data Systems (IDS) for the longitudinal study of public initiatives. A table describing the data used by Colorado's Opportunity Framework is presented as an example.