WATSON, JAMES D. & FRANCIS CRICK
“Molecular structure of nucleic acids. A structure of deoxyribose nucleic acid.” Offprint from: Nature Vol. 171 (April 25, 1953). London, 1953
FIRST EDITION, THE RARE OFFPRINT. Signed by Watson and Crick. This volume is also inscribed and signed by Maurice Wilkins and Alec R. Stokes, co-authors of the second paper with H R. Wilson. Wilkins shared the 1962 Nobel Prize in Medicine with Watson and Crick.
the first printed account of sunspots and the rotation of the sun - a landmark moment in the Copernican RevolutionFABRICIUS, JOHANN
De Maculis in Sole observatis, et apparente earum cum Sole conversione; Narratio cui Adjecta est de modo eductionis specierum visibilium dubitatio. Wittemberg: Seuberlich for Borner and Rhefeld, 1611
FIRST EDITION of Fabricius’s Account of Spots Observed on the Sun and of their Apparent Rotation with the Sun), the first printed work on sunspots. This volume is a landmark of the Copernican revolution in astronomy.
VON NEUMANN ,JOHN, ET AL
Ergebnisse eines mathematischen Kolloquiums, unter Mitwirkung Kurt Gödel und George Nobeling. Herausgegen von Kurt Menger. Heft 1-8.. Leipzig & Berlin: B. G. Teubner and F. Deuticke, [1931-1937].
A rare complete run of first editions of the proceedings of the celebrated Vienna Colloquium.
Typed letter signed to Michele Besso. Princeton, 14 December 1946
In this fine letter Einstein reminisces with his lifelong friend Michele Besso about their days at the Swiss Patent Office where together they developed the theory of special relativity. He likens their scientific conversations at the office to the work of God creating the world.
Iconic signed Darwin photograph “I like this photograph much better than any other which has been taken of me.”(DARWIN, CHARLES.) CAMERON, JULIA MARGARET
Portrait of Charles Darwin, signed by Darwin and by Cameron. Cameron, 
THE ICONIC PORTRAIT OF CHARLES DARWIN, boldly signed by Charles Darwin and by Julia Margaret Cameron.
VON BRAUN, WERNHER
Original drawing, “3-Stage Satellite Vehicle (pitch plane)” signed and dated 1952. [Huntsville, Alabama, 1952.]
his is an original signed drawing of a space ship by Wernher von Braun, the father of the American space program. He made this drawing for his landmark Colliers series “Man Will Conquer Space Soon” (1952-54), which played a central role in inspiring a generation of rocket scientists and convincing the public of the possibility of space exploration. These essays covered seemingly every aspect of manned space flight and anticipated many developments including the enormous multi-stage vertical launch vehicle (to become Saturn V), a horizontal landing space ferry (the Space Shuttle), an orbiting space station, a lunar landing, the establishment of a base on the moon, and ultimately a manned expedition to Mars.
GODDARD, ROBERT H
Autograph manuscript diagrams and text. [n.p., n.d.],
Goddard (1882-1945), the “father of modern rocket propulsion,” launched the world’s first liquid-propellant rocket on March 16, 1926, at Auburn, Massachusetts, a “feat as epochal in history as that of the Wright brothers at Kitty Hawk” (NASA). Goddard had a rare genius for invention and these notes suggest the endless refinement necessary to create a dependable, operational rocket engine.
“Eine neue Bestimmung der Molekueldimensionen” (pp. 289-306) and “Zur Theorie der Brownschen Bewegung” (pp. 371-381) in Annalen der Physik 4th series, vol. 19, no. 2.. Leipzig, 1906
First journal edition of Einstein’s doctoral thesis, revised, and first edition of his second paper on Brownian motion. Signed and dated 1950 by Einstein on p. 289 at the beginning of his thesis.
WATSON, JAMES D. & Andrew Berry
DNA The Secret of Life. [New York: Knopf, 2003.]
Presentation copy inscribed by James Watson to Francis Crick and his wife: “For Francis and Odile from Jim 27 November 2002.” This is the dedication copy, with the printed dedication stating “To Francis Crick.”
two items: $45,000
Experiments and Observations in Soaring Flight. Offprint from: Journal of the Western Society of Engineers 8 [misprinted “III” on front wrapper], no. 4 (August, 1903). [Chicago], 
FIRST EDITION, offprint issue. Presentation copy with the stamp of the Wrights’ advisor, mentor, and chief promoter, aviation pioneer Octave Chanute. Chanute was the most important figure in aviation from 1890 to 1910