The GMM is a 501(c)(3) nonprofit organization and has been owned by the Sons of Italy Foundation® (SIF) since 1919. The SIF is the philanthropic arm of the Order Sons and Daughters of Italy in America® (OSDIA), the oldest and largest organization for men and women of Italian heritage in the United States. The SIF is a registered 501(c)(3) charitable organization and donations are tax-deductible to the extent allowed by law. View IRS charitable designation. The GMM is administered by the Grand Lodge of New York, OSDIA®.