The document discusses methods for analyzing material culture, documents, and quantitative data in historical research. It makes the following key points:
1) Historians must immerse themselves in primary and secondary sources to gain thorough context before formulating research questions. Questions should be open-ended and testable.
2) Researchers must authenticate sources by establishing their origins and credibility. Primary sources like records and relics require examining motivations and contexts.
3) Both traditional documentary analysis of sources and quantitative content analysis are useful, with the latter adding rigor. Historians interpret sources in their original contexts to draw defensible inferences.