DARWIN DIRECTS THAT HARVARD PROFESSOR ASA GRAY
IS TO RECEIVE UNBOUND SHEETS OF HIS: ORIGIN OF SPECIES
DARWIN, CHARLES. (1809-1882). British naturalist who advanced the idea of evolution. A Superb, and apparently unpublished, Autograph Letter Signed, “Ch. Darwin.” Three pages, octavo. “4 Chester Place, Regents Park”, “Monday”, no year but circa 1860.