Earl Nichtingale Books

Earl Nightingale was an American motivational speaker and author, known as the "Dean of Personal Development." His voice was heard in the early 1950s as Sky King, the hero of a radio adventure series, and he hosted a WGN radio show from 1950 to 1956. Nightingale authored The Strangest Secret, which economist Terry Savage has called “…One of the great motivational books of all time“.