THE FIRST PUBLISHED DESCRIPTION BY BABBAGE OF HIS ANALYTICAL ENGINE, THE FIRST GENERAL PURPOSE COMPUTER. AN EXTRAORDINARY COPY: FIRST EDITION, INSCRIBED BY BABBAGE TO EMPRESS EUGENIE AND IN A MAGNIFICENT ROYAL PRESENTATION BINDING. More

FIRST EDITION OF THOMAS BAYES'S EXTREMELY INFLUENTIAL WORK ON THE CONCEPT OF "INVERSE PROBABILITY", THE BASIS OF MODERN STATISTICAL INFERENCE. More

EXTREMELY RARE FIRST EDITION IN ORIGINAL WRAPPERS of Bergman’s study of chemical affinities, including a large fold-out table, “the finest achievement in the tradition of affinity tables,” and a major predecessor of the periodic table. More

FIRST EDITION, OFFPRINT ISSUE, INSCRIBED BY NIELS BOHR, of Bohr's Nobel Prize lecture, delivered on the occasion of Bohr's acceptance of the 1922 Nobel Prize in Physics. An association copy: Inscribed to J.A. Christiansen, noted scientist and student of Bohr. More

THE ORIGIN OF STATISTICAL MECHANICS: FIRST EDITIONS, JOURNAL ISSUES, IN ORIGINAL WRAPPERS, OF LUDWIG BOLTZMANN’S ATTEMPTS TO DERIVE THE SECOND LAW OF THERMODYNAMICS FROM THE BASIC PRINCIPLES OF MOLECULAR MECHANICS, AND HIS PROPOSAL OF THE “ERGODIC HYPOTHESIS.”. More

RARE SIGNED FIRST EDITION OF NOAM CHOMSKY’S “SYNTACTIC STRUCTURES”: “A WATERSHED IN THE STUDY OF HUMAN LANGUAGE”. SIGNED BY CHOMSKY IN INK ON THE TITLE PAGE. More

FIRST EDITION IN ORIGINAL WRAPPERS of Compton’s report providing the data and experimental evidence for the dual wave-particle nature of electromagnetic radiation, later called “the Compton effect”. More

FIRST EDITION, FIRST ISSUE (one of only 2500 copies) in original cloth of Darwin's seminal work on the evolution of man. More

FIRST EDITION of De Chancourtois’s presentation of his “telluric screw,” the first periodic representation of the elements; precedes Mendeleev’s table by seven years. More

AN EXTRAORDINARY LETTER BY EINSTEIN TO HIS SON OFFERING LIFE ADVICE AND DISCUSSING FREUD, SHAKESPEARE, AND SCHILLER. More

FIRST EDITION, COMMERCIAL OFFPRINT ISSUE, of Einstein's important 1914 paper on the development of general relativity. More

FIRST PRINTING of Albert Einstein's groundbreaking 1905 paper, the introduction and derivation of the most famous equation in modern physics: E=mc2. More

TOWARDS THE END OF HIS LIFE, EINSTEIN WRITES TO ONE OF HIS FRIENDS FROM THE PATENT OFFICE CONCERNING ONE OF THE CENTRAL STRUGGLES OF HIS SCIENTIFIC LIFE. COMMENTING ON THE WORK OF DIRAC, EINSTEIN ADMITS THAT ALTHOUGH HE “CAN’T TAKE A STATISTICAL FOUNDATION OF PHYSICS SERIOUSLY” HE FINDS IT..... More