Our Businesses and Brands New League Sources comprises industry-leading media and information services brands focused on creating authoritative and engaging content. Discover more than 200 years of leading literary voices and bestselling books. Learn more about HarperCollins Discover more than 200 years of leading literary voices and bestselling books. Learn more about HarperCollins Discover more than 200 years of leading literary voices and bestselling books. Learn more about HarperCollins Discover more than 200 years of leading literary voices and bestselling books. Learn more about HarperCollins