Members of an Arizona book history club discovered centuries-old handwritten notes by “Paradise Lost” poet John Milton scribbled in a 16th century book. In March, scholars, including faculty from Arizona State University, were meeting inside a Phoenix public library’s Rare Book Room when they made the shocking finding in a 437-year-old book titled “Holinshed’s Chronicles,” the library announced. “Believed to be very popular in its time, ‘Holinshed’s Chronicles’ was used as a source for much of Shakespeare’s works. It’s likely that, at one time, this was John Milton’s personal copy of the book …