1838, INDEPENDENCE (Blue Swallowtail Line): Folded letter dated "New York 5th December 1838" addressed to London, put on board by the Forwarding Agent Gilpin‘s Exchange with matching oval " FORWARDED THROUGH GILPIN´S EXCHANGE READING ROOM AND FOREIGN LETTER OFFICE N. YORK" on reverse, charged as double-rate with "3/2"d, fine
