Recenty,i found some books on carnatic music, in www.archive.org and was so excited to see them there.
I'm sure atleast some of us have already found them in the treasure house,but just in case any of you missed.
Sri Sripada Pinakapani
http://www.archive.org/details/sangeeta ... a015270mbp
http://www.archive.org/details/SangeethaSourabham-3
http://www.archive.org/details/SangeethaSourabham-4
Sri Nedunuri Krishna Murthy
http://www.archive.org/details/annamayy ... u018017mbp
Sri Voleti Venkateswarulu
http://www.archive.org/details/Tyagaraj ... erthamnalu
Sarma