Thanks to Smt Sunitha Madhavan for the share.
Sri V.Venkayya was a direct descendant of Appayya Dikshitar and also the first Indian Epigraphist and historian.
The book was published by Tamil Arts Academy in year 2020, the 500th birth anniversary of Appayya Dikshitar. It is available at Sri Kamakoti Book Centre, Kanchipuram. Cost Rs.500. Proceeds go to Kanchi Mutt.