Scottish missionary and explorer (1813–1873). Rare ALS, three pages on two adjoining sheets, 4.5 x 7, July 25, 1865. Letter to Mr. Murray. In part: “I am sorry that I have to decline your very kind invitation for Friday next. We came up from Newstead Abbey last night to Grant's wedding.” A tear and bit of paper loss to upper left of the second integral sheet, tiny repaired edge separations at folds, and some show-through from writing on opposing sides, otherwise fine condition. In January 1866, Livingstone set out for Zanzibar in order to search for the source of the Nile—it was during this trip that he lost contact with the outside world and was presumed dead until his encounter with fellow explorer Henry M. Stanley“Dr. Livingstone, I presume?” RR Auction COA.