As well as Early English Books Online (EEBO), you could also try searching Early English Prose Fiction, which contains works by Thomas Nashe and Philip Sidney.
Other primary sources from the time period include:
The Library's Special Collections department houses primary sources in many formats including letters, diaries, manuscripts and photos, which can be accessed via their dedicated reading room in the Research Commons, Old Library.
Visit the Archives and Special Collections LibGuide, and the Early Modern resources page in particular, for more information.
Use the Archive Catalogue Search to find out what is available.
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