http://www.enotes.com/topics/leonardo-da-vinci
http://www.lisashea.com/hobbies/art/lastsupper.html
http://arthistory.about.com/cs/leonardo/a/last_supper.htm
these are some of the websites i thought were really interesting . they captured the " true " meaning in a sense , i guess you can say they gave information about the historical part of it . they really analyse and talk about it down to the very last color ! ha maybe im exaggerating slightly , but they are still really great ! check them out .