My great-grandfather, Munagala S. Venkataramiah, wrote/translated books on Hindu "Advaita" philosophy. He lived in Tiruvannamalai (Tamil Nadu), and was a disciple of Sri Ramana Maharshi. I have put Dr. Venkataramiah's biography here. The books below (and some others) are available on Kindle.
Talks with Sri Ramana Maharshi (extract also available in PDF)
Tripura Rahasya (Translated from Sanskrit; full-text available online)