This series provides a framework for understanding key sociological studies and projects conducted by Merton in the mid-twentieth century. Project documentation includes analyses of publications, general surveys, and proposed project topics. Study materials, which comprise the bulk of the series, cover Merton's early sociological pursuits, mainly while he was involved with the Bureau of Applied Social Research at Columbia University. Of note are original interviews, questionnaires, and journals of study participants, which provide an unfiltered look at American social thought and attitude regarding social and cultural issues, education, and careers. These are particularly evidenced in the Ethnic Opinionnaires completed in the 1940s. The records also reflect the evolution of Merton's studies into larger bodies of work, such as publications and conferences. This series is particularly important as it illuminates early social research methodology. A good portion of the records include notes, proposals for funding, drafts of questionnaires, and memoranda related to execution of studies. The studies were also used in Merton's courses and seminars at Columbia University as a means of teaching sociology students about research practices.