National Archive of Criminal Justice Data (NACJD)The archive contains data from over 2,700 curated studies or statistical data series. NACJD provides access to data sets from the National Crime Victimization Survey (NCVS), the FBI's Uniform Crime Reports (UCR), the FBI's National Incident-Based Reporting System (NIBRS), and the Project on Human Development in Chicago Neighborhoods (PHDCN).