National Geographic : 1950 Dec
4 Marine Post Office Clerks Sort a Million Pieces a Year Packages and pigeonholed letters at the Detroit River Station await passing Lakes carriers. Each compart ment bears the name of a ship; this rack contains more than 500. The delivery boat gave up mail sorting sev eral years ago; now the job is done on shore. * Mail-boat Owner and Pilot Keep Watch on River Traffic Few bodies of water anywhere in the world see more shipping than the Detroit River, one of the Huron-Erie connecting links. Each year the Westcott makes some 22,000 mail deliveries. John Ward Westcott, son of the agency's founder, here checks incoming vessels.