This is the Celtic tree design:
![](http://2.bp.blogspot.com/-mO_rO2lho7Q/TeH_uI1O5_I/AAAAAAAABos/Ik4gcH5iFI2BCeltic%2BTree.jpg)
This is in the public domain, feel free to download it and do whatever you want with it, this is a copyright free clipart available to be used in any publication you want.
Available in EPS, AI, CDR, my designs are free and in the public domain
Download link : http://upload-il.net/en/D0C6A3d6C4D/57