Hi,
I think this might be interesting (if not directly useful) to Wikisourcians:
http://www.archimedespalimpsest.org/digitalproduct1.html
A digital version of the Archimedes Palimpsest was released yesterday.
It's licensed under CC-BY. http://archimedespalimpsest.net/0_ReadMe.html#rights-and-conditions-of-use
cheers Brianna