Priceless Leonard Da Vinci manuscripts are found in the National Library of Madrid by Dr. Jules Piccus, a University of Massachusetts Language professor. Some 700 pages and 200 drawings are included in the lost treasure. It s been missing for a century and a half. Close up of a hand holding up a drawing from a manuscript drawn by Leonardo da Vinci in a national library in Madrid, Spain. CU Dr. Jules Piccus from the University of Massachusetts holding a page.