Primary Sources are immediate, first-hand accounts of a topic, from people who had a direct connection with it.
Primary sources can include:
Primary sources also include first-hand accounts that were documented later, such as autobiographies, memoirs, and oral histories. However, the most useful primary sources are usually considered to be those that were created closest to the time period you’re researching.
Definition from UMassBoston Libraries and University of Illinois Libraries
EXAMPLES:
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Search the full print editions of numerous national newspapers via these library links.
Magazines available via the library's databases (free full text, large archives of issues)
Magazine websites