Md. Code, Alcoholic Beverages and Cannabis § 2–152

(a) A common carrier shall report quarterly to the Executive Director:

(1) the date of each delivery of wine in the State; and

(2) the name and address of the direct wine shipper and the receiving consumer of each delivery.

(b) A common carrier shall maintain for 3 years complete and accurate records of all information needed to verify compliance with this part.