Here's a few more links for clipart:

http://cybersleuth-kids.com/sleuth/W...ltic/index.htm
http://webclipart.about.com/od/msub6..._Art_Links.htm
http://www.aon-celtic.com/
http://www.ceolas.org/clipart.html
http://www.davehall.force9.co.uk/goldcup/clipart/
http://www.davehall.force9.co.uk/templs/templs3.htm
http://www.deitydiva.co.uk/celtic/
http://www.gael-image.com/portfolio/celtwork.html
http://www.webomator.com/bws/data/reclip.html
http://www.webweaver.nu/clipart/celtic1.shtml