The Spreckels Organ Society is a 501(c)(3) non-profit founded in 1988 to preserve, program and promote the Spreckels Organ as a world treasure for all people. All concerts on the Spreckels Organ are free to the public in accordance with the 1915 Deed of Gift whereby the brothers John and Adolph Spreckels gave the organ and pavilion to the City of San Diego. The Spreckels Organ Society works cooperatively with the City of San Diego in order to fulfill and expand upon this promise.