Sam Phillips with his son Knox Phillips, Jerry Wexler, Dan Penn, Jimmy Johnson, Barry Beckett and others. (Photo courtesy of Dick Cooper.)

Sam Phillips, Jerry Wexler and Jimmy Johnson. (Photo courtesy of Dick Cooper.)

Sam Phillips, Jerry Wexler and Barry Beckett. (Photo courtesy of Dick Cooper.)

Sam Phillips, Roger Hawkins and Jerry Wexler. (Photo courtesy of Dick Cooper.)

Sam Phillips, Jerry Wexler and Barry Beckett. (Photo courtesy of Dick Cooper.)