Serendipity and Milton's First Folio The First Folio of Shakespeare's work ranks among the rarest of books. Only about 230 copies survive. One copy of the Folios donated to the Free Library of Philadelphia included long ignored marginalia. It turns out that serendipity had a role to play in rediscovering Milton's First Folio copy hundreds of years after the author's death. By … [Read more...] about Serendipity and Milton’s First Folio: Discovering Milton’s Annotated Copy of Shakespeare’s First Folio