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What's a Primary Source?
A primary source is a document, speech, or other type of evidence written, created or otherwise produced during the time under study. Primary sources offer an inside view of a particular event.
USDA National Agricultural Library Digital Collection
The NAL Digital Collections offers one avenue by which customers can use collection materials available in digital format, whether those materials originated in that format or were converted to it later. The NAL Digital Collections offers rich searching, browsing and retrieval of digital materials and collections and provides reliable, long-term online access to selected publications.