http://www.projectmadurai.org/pmworks.html
http://www.tamilvu.org/ta/library-libcontnt-273141
These pages have public domaon / CC0 tamil books in text format.
How to add them in ta wiki source? For most of the books we dont have PDF format.
Shall we add them as single page books?
Let us explore these and plan for a community drive to bring more books to ta wikisource.