Lanman & Kemp Correspondence from El Salvador

Sonsonate, El Salvador, October 10, 1862 dateline, Acajutla October 11, 1862 circular date stamp, per Pacific Mail Steamship to Panama, then overland across the isthmus, Atlantic and Pacific Steamship Co. packet to New York arriving November 3, 1862, rated 20¢ due as an incoming steamship letter for distance greater than 2,500 miles.

Acajutla, El Salvador, September 20, 1866, New York "STEAMSHIP 10" rated 10¢ due as incoming steamship letter, regardless of distance.