The American Terrorism Study is a relational database containing data derived from federal court records and open source media documents. A description of the database, as well as a select list of coded variables, are available in the ATS Public Skeleton Codebook on this page. Datasets from federally funded projects, exported in flat-file format using SPSS or similar applications, are archived in the National Archive of Criminal Justice Data (NACJD) housed within the Inter-University Consortium for Political and Social Research (ICPSR) at the University of Michigan.