Lot of two items. A one page ALS, signed “F. Galton,” 4.5 x 7, dated November 25, 1873, arranging a meeting after he travels by train; and a one page ALS, signed “Humboldt,” in untranslated German, no date. Pencil notations to Galton’s letter and mounting remnants to Humboldt’s, otherwise fine condition. R&R COA.