By Attributed to Jan van Calcar - Page xii of De humani corporis fabrica (1534 edition), showing portrait of Andreas Vesalius. Original scan of page cropped to show portrait alone, contrasted slightly to 70 in Microsoft Photo Editor. The original book from which the scan arises is a copy of the 1543 edition stored in the collection of the U.S. National Library of Medicine, a division of the National Institutes of Health (NIH)., Public Domain,
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