The perspective of the Last Supper www.youtube.com YouTube
Da Vinci studied human anatomy in great detail makeyourideasart.com
Santa Maria Delle Grazzie Abbey, Milan, Italy www.google.com
Milan Italy maps.google.com Google Maps
Leonardo Da Vinci biography www.metmuseum.org
Last Supper History www.nytimes.com Kimmelman, Postcard, Last Supper