"Primary sources provide first-hand testimony or direct evidence concerning a topic. They are created by witnesses or of the events. Often these sources are created at the time when the events are occurring, but they can also include autobiographies, memoirs, and oral histories recorded later. Primary sources are characterized by their content, regardless of the format available. (Handwritten notes could be published; the published book might be digitized or put on microfilm, but those notes are still primary sources in any format).
Some types of primary sources:
Harvard Library. "Knowing a primary source when you see one," Library Research Guide for the History of Science: Introduction. Last Modified September 18, 2023. guides.library.harvard.edu/HistSciInfo/primary.
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Contextual information on hundreds of the most significant people, events, and topics in U.S. history. Search using keywords or explore curated topic pages.
Primary sources could show up in a lot of places in the physical library collection. It depends on the angle of the topic - are you focused on regional history, arts, games, literature? Here are some library collections that may be helpful:
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