There is a new book out titled:
A Killing Art: The Untold History of Tae Kwon Do
Information can be found via this link:http://www.ecwpress.com/books/art_killing_untold_history_tae_kwon_do
The author is a 25 year student of TKD, training in both ITF & WTF types. He is also an investigative journalist. I can't wait for my copy. I will post my comments on it when I receive mine. The history of TKD is very controversial for many reasons. I will look forward to his work.