Catapult Sites

Here are a few catapult sites I found that will help you begin your research:

I ordered one of these books for class:

http://building-a-catapult.com/index2.html

I like The Ogre Catapult on this page:

http://www.stormthecastle.com/index.htm

http://hubpages.com/hub/How-to-Build-a-Catapult---An-Illustrated-Guide