The types of primary sources you might use in your research in medieval and renaissance studies are in many ways no different than any other field, but, there is a good change you'll find yourself leaning towards the following types of materials in your research in the field
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Illuminated manuscripts,
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Maps
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Diaries and journals
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Letters
But don't forget that you can also find and use the same sorts of documents you might in your work in history, education, or sociology. So continue to make use of the following types of primary resources in your work
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data and statistics
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documents produced by organizations and government agencies, decrees, etc.
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speeches
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interviews