Primary sources are the raw material upon which critical, analytic, and historic studies are based. Primary sources enable the researcher to get as close as possible to the truth of what actually happened during an historical event or time period.
Primary sources are the evidence left behind by participants or observers.
For a more detailed definition of the various kinds of primary sources, visit the UC Berkeley guide . More sources are available. Ask a Reference librarian for assistance. There are many wonderful primary sources right in our own Special Collections and Archives . See descriptions on the library site, or visit the Special Collections Room in the library.