Nightingale-Conant's one of the world’s largest producers and publishers of personal development and self-help audio programs, and was one of the driving forces behind the massive mainstream expansion of the self-improvement industry in the mid-20th century. The Nightingale-Conant Corporation was founded in Chicago, Illinois in 1960 by broadcaster Earl Nightingale and businessman Lloyd Conant. Their shared mission was to bring people the tools and information they needed to create success… (More on Nightingale-conant)