This chapter explores the early history of the steamship cartel, following the rivalry between transatlantic shipping companies, the British and North American Royal Steam Packet Company, and the New York and Liverpool United States Mail Steamship Company, known as the Cunard Line and Collins Line, respectively. Their competitive business practices and the first international steamship cartel were kept out of the public eye for a hundred years; author Edward W. Sloan examines surrounding source material, including the correspondence of Liverpool based banker and merchant, William Brown, to determine what knowledge of nineteenth-century shipping be gleaned from the cartel operation, information that remained obscured during its time.