science

CHARLES DARWIN — TO EDWARD BARTLETT — 1871
DARWIN, CHARLES. (1809-82). British scientist and founder of evolutionary theory. Manuscript Note Boldly Signed: “Ch. Darwin / Down / Oct[ober] 17” no year, [but 1871 — from postal cancelations], penned on the verso of an imprinted UK 1/2 penny Postcard. Addressed to: “E[dward] Bartlett, 70 Delancey Street, Regent’s Park, N.W. [London]”.

WONDERFUL SIGNED SEPIA-TONED PHOTOGRAPH OF THOMAS EDISON
EDISON, THOMAS A. (1847-1931). American inventor. Handsome, sepia-toned Photograph Signed, “Thos A. Edison”, with his bold umbrella paraph, under his image, on the photographic surface.

FARADAY GOES TO HAMPTON COURT
FARADAY, MICHAEL. (1791-1867). British physicist and chemist. Autograph Letter Signed, “M. Faraday”, on crested Royal Institution stationery. One full page, small octavo. London, June 16, 1863.