David Tavares is the author to Black Robe:The Kenpo/Kajukenbo Conection. He's also a Kajukenbo practitioner and martial arts instructor . He talks about his martial arts journey and some Kajukenbo history. His book is available through Amazon here:https://www.amazon.com/Black-Robe-Kempo-Kajukenbo-Connection/dp/1546350977/ref=sr_1_2?keywords=black+robe+book&qid=1566799779&s=gateway&sr=8-2