zHPG. Official cover of the "Dead Letter Office" sent from Washington to Concord on 21/SE/1894, VF! (Image)

zHPG. 6 Covers posted between 1914 and 1964, including 3 interesting flights, VF quality! (Image)

zHPG. 3 Covers sent to Brazil and Australia between 1936 and 1947 with interesting postages and censor labels, one with 4 nice cinderellas on back! (Image)