Primary sources were created at the time of an event or period. They are often the product of an eyewitness or an original creator. They might be original reports of an event, artifacts from an event or time period, or creative works, and include:
Secondary sources interpret, analyze, or contextualize primary sources. They are second-hand interpretations. They might include:
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Kenya and history and (letters or correspondence or narratives)
This technique can be used in LibrarySearch, MIDCAT, or other databases.