INNOVATORS: LESSONS FROM THE SOCIAL SECTOR profiles five winners of the Peter F. Drucker Award for Nonprofit Innovation. Each story is enhanced by the commentary of four great thought leaders: Jim Collins (Good to Great, Built to Last); Regina Herzlinger (Harvard Business School); Nan Stone (Harvard Business Review; Delivering on the Promise of Nonprofits); and C. William Pollard (The Soul of the Firm). These innovators describe the unique elements and strategies used to fulfill the mission of each organization and create flourishing programs.