Autograph letter signed to [Fanny Kellogg]. Down, Beckenham, Kent, April 13, 1879

Darwin discusses the hereditary transmission of behavior and a vivid example of the phenomenon from the opening chapter of The Expression of the Emotions in Man and Animals.

$22,000

Albert Einstein: Philosopher-Scientist. Evanston: Library of Living Philosophers, 1949

FIRST EDITION. One of 760 numbered copies signed and dated by Einstein.

$18,500

Some Account of the Pennsylvania Hospital; From its First Rise, to the Beginning of the Fifth Month, called May, 1754. Philadelphia: B. Franklin and D. Hall, 1754

FIRST EDITION of Benjamin Franklin’s account of the Pennsylvania Hospital, the first hospital established in the British colonies, co-founded by Franklin with his friend Dr. Thomas Bond. It remains a leading medical institution in Philadelphia.

$17,500

The World as I See It. New York: Philosophical Library, (c.1949)

Signed and dated 1950 by Albert Einstein on the front free endpaper.

$13,500

Catalogue of the celebrated collection of works of art and vertu known as “The Vienna Museum,” the property of Messrs. Lowenstein Brothers, of Frankfort-on-the-Main. London: Christie, Manson & Woods, 1860

This important volume is “the earliest photographically illustrated auction catalogue” (Gernsheim, Incunabula, 122). It contains 36 photographs on salted paper by Hermann Emden of Frankfurt.

$12,000

Signed photograph of Watson and Crick with their three-dimensional model of the double-helix DNA molecule. Anthony Barrington, 1953, printed later

Signed by Watson and Crick in the white lower margin. The discovery of the structure of DNA was the cornerstone event in modern genetics and biology and one of the greatest scientific discoveries of all time.

$9,500

Two 16 mm films of the first Russian and the first American to walk in space. No place, 1965

Films of the space walks of Aleksei Leonov and Edward White.

$9,500

Interstellar and Interplanetary Communication by Optical Masers. Washington, February 27, 1961

PRE-PUBLICATION RARITY. “The classic paper published in Nature that started it all” (coseti.org), this is the founding work of optical SETI. This pre-publication form is dated more than a month before the article’s publication in Nature. For years SETI research focused on radio transmissions, but the development of powerful lasers has made Optical SETI (OSETI) a highly promising area of research. Townes’s prescient proposal is even the more remarkable given the very limited power of masers and lasers at the time this paper appeared.

$8,500

Autograph note signed. No place, no date c. 1950

Einstein writes in German, “This for the unlikely event that you would need it as much as I. With warm regards to all of you Your A. Einstein” (“Dies für den unwahrscheinlichen Fall, dass Sie es ebenso notwendig hätten als ich. Mit herzlichen Grüßen an Sie alle / Ihr A. Einstein”).

on hold: $7,500

The Double Helix. In Atlantic Monthly. Boston, January and February 1968

FIRST EDITION of The Double Helix, preceding the publication in book form in late February 1968. Signed by James Watson on the front cover of each issue.

$4,800