Original title page of the First Folio, showing a portrait of William Shakespeare, reproduced in the SUNY Buffalo State First Folio facsimile from 1866. Marginalia are the notes and comments left in the margins of books. Marginalia has been a feature of the physical book throughout history and can be anything from a smiley face to indicate a favorite passage to elaborate literary criticism taking up all the blank space on a page. In the SUNY Buffalo State First Folio facsimile, the marginalia throughout the book makes the copy unique. We know very little for sure about the person who wrote the marginalia (called a marginaliast), but close readings of the words s/he left behind can reveal a lot about his or her identity. One thing we do know...