To facilitate the secondary analysis of citizenship and social studies data collected by the National Assessment for Educational Progress, this project constructed a set of three consolidated data archives and provided a simplified documentation system for users. The three consolidated files produced were (1) the 1971-72 Social Studies Assessment, (2) the 1975-76 Citizenship and Social Studies Assessments, and (3) two cohort files for 9-13-year-olds and for 13-17-year-olds. The project also explored the feasibility of constructing indices and scales that would bridge across packages and age groups, but the distribution of the items was too thin to allow the use of a factor analysis methodology for the identification of comparable items. (Author)