Fifty bakeries in New York formed an association. They developed a system of distribution under which stores were only allowed to buy from a single baker. A store that wanted to shift to another baker had to consult the association and pay cash to the former baker. The association also decided to raise the retail price of bread from 75 to 85 cents. All the association's members printed the new price on their bread sleeves. Are the bakeries in violation of the antitrust laws?