to Change the Course of Florentine History . ^ The Leonardo Bridge Project ^ Levy, Daniel S. (October 4, 1999). "Dream of the Master" . Time magazine . http://www.vebjorn-sand.com/dreamsofthemaster.html . Retrieved 2007-09-27 . ^ The U.S. Public Broadcasting Service (PBS), aired in October 2005, a television programme called "Leonardo's Dream Machines",