Most of the regulatory authorities of the Administrator contained in this part are delegated to appropriate TTB officers. These TTB officers are specified in TTB Order 1135.11, Delegation of the Administrator's Authorities in 27 CFR Part 11, Consignment Sales. You may obtain a copy of this order on the TTB website (https://www.ttb.gov) or by mailing a request to the Alcohol and Tobacco Tax and Trade Bureau, National Revenue Center, 550 Main Street, Room 8970, Cincinnati, OH 45202.