Dravidian (Tamil) is the language of the Indus Valley Writing: A study of the most ancient Tamil Language
by Clyde Winters

This book provides a detailed decipherment of the Indus Valley writing. It gives the reader an explanation of how Dr. Winters deciphered the Indus Valley writing and how the language of the Indus Valley seals is an ancient aspect of Tamil. The book is divided into two parts one is an overview of the Indus Valley writing while part two provides a detailed account of how to read the seals and the grammar of the Indus Valley language. The book also provides a dictionary of over 200 signs that have been deciphered by Dr. Winters.