New Biography of Leonardo da Vinci by Walter Isaacson
     “Walter Isaacson is at once a true scholar and a spellbinding writer. And what a wealth of lessons are to be learned in these pages.”   —David McCullough,   two-time winner of the Pulitzer Prize    Walter Isaacson, author of a new biography of Leonardo da Vinci , discusses the Renaissance genius' wildly eclectic notebooks that contained everything from landscape sketches to math equations to 'to do' lists.   For more about Leonardo da Vinci by Walter Isaacson http://ow.ly/cHwn30d8Yrg  Book available for purchase at Amazon  and Powell's       Also by Walter Isaacson