1851, ARCTIC: Folded letter dated "Glasgow 29th July 1851" with matching red "GLASGOW PAID JUL 29 1851 to Philadelphia, prepaid "8"d. outgoing ship letter rate, reverse with "SHIP LETTER LIVERPOOL JY 30", upon arrival black integral cds. "NEW-YORK SHIP AUG 11 7cts" struck, a fine and rare entire conveyed during the only American contract steamship voyage known to have been designed for ship letters only, only three covers recorded from this voyage
