D.D.Palmer the founder of Chiropractic adjusted Harvey Lillard an African America in Davenport Iowa. Mr. Lilllard was deaf and told Mr. Palmer that he lifted something and heard a cracking sound in his back, (Lillard) stated that his hearing was lost after that happen. Mr. Palmer felt his spine a pushed on what he believed to be a misplaced bone, Lillards hear improved as a direct result of that thus launching Chiropractic.