Maryland Transportation Section 15-305.1
§ 15-305.1.
  (a)   A wholesale dealer who is licensed by the Administration under this subtitle:
    (1)   May buy a vehicle from another dealer, at an auto auction, or from a retail seller;
    (2)   May sell a vehicle to or exchange vehicles with another dealer;
    (3)   Except as provided in paragraph (4) of this subsection, may sell a vehicle or exchange vehicles at an auto auction;
    (4)   May not sell a vehicle to or exchange vehicles with a retail buyer; and
    (5)   May not buy, sell, or exchange new vehicles.
  (b)   A wholesale dealer shall keep a record of the following:
    (1)   The year, make, model, and identification number of a vehicle that is bought, sold, or exchanged;
    (2)   The date that a vehicle is bought, sold, or exchanged;
    (3)   The amount for which a vehicle is bought or sold;
    (4)   The name, address, and license number of the other person with whom the wholesale dealer conducts a purchase, sale, or exchange;
    (5)   The odometer mileage statement for a vehicle that is required under the federal Motor Vehicle Information and Cost Act; and
    (6)   Each invoice, bill of sale, and other pertinent document and record in the form required by the Administration.