Pranam Bhaiyon!
I recently stumble upon this book on the net when I was searching about the zend Avesta. It's really awesome and throws a better light on the history of india (well according to me anyway) its the rigveda a historical analysis - written by shrikant G talgeri.
link- http://voiceofdharma.org/books/rig/
Please let me know what you think of the book and the writer.