Benjamin Franklin had 1,200 human bones buried under his London house. π . . . In 1998, workers restoring 36 Craven Street pried up basement bricks and found a pit packed with fragments from at least 15 bodies. The remains dated to the 1770s, when Franklin's tenant William Hewson ran a secret anatomy school there. Bodies were bought from grave robbers and dissected in the founding father's basement.
Source
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