research materials

Research materials are the sources, documents, data, and other resources gathered or consulted during an investigation or study.

These may include primary sources like original documents, interviews, and raw data, as well as secondary sources such as books, journal articles, and analyses by other scholars.

The historian spent months collecting research materials from archives across three countries.

In academic and professional contexts, the quality and breadth of one's research materials often determines the credibility of the final work.