John Elkington 
Pirates of the Gayoso Bayou [EPUB ebook] 

Under the world famous Beale Street, the Home of the Blues, birthplace of Rock n Roll runs the Gayoso Bayou, a dark and scary place. The Bayou forms the backdrop of a story about a captured British treasure buried by the pirate John Lafitte with help from the founder of Memphis Andrew Jackson. Into this scary bayou a group of boys led by Big Jerry look to become rich by locating the treasure..