The U.S. National Library of Medicine has started to publish their Incabula collection online. Those fascinating documents provide a glimpse into the medical knowledge in Europe towards the end of the 15th century. The NLM collection includes more than 580 items, 42 of which are publicly available so far in high resolution scans.
https://www.nlm.nih.gov/news/incunabula_ww2_gov.html
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