Keywords: Cover US 1848 Boyds City Express.jpg Cover mailed in New York 1848 with a Boyd's City Express stamp 1845 Boyd's City Express 2¢ 20L4 black on green Scanned April 2005 by User Stan Shebs PD-old Postal covers of the United States 1845 stamps of the United States 1848 Postal history of the United States Stamps on covers and postcards |