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

OFFPRINTS OF TWO PAPERS BY BLACKETT, INCLUDING HIS FAMOUS PHOTOGRAPHIC PROOF THAT RADIOACTIVITY COULD PRODUCE ALPHA DECAY, AND HIS DISCUSSION OF DUAL-CAMERA CLOUD CHAMBER SET-UPS, TWO PAPERS THAT CONTRIBUTED TO HIS BEING AWARDED THE 1948 NOBEL PRIZE IN PHYSICS. More

FIRST EDITIONS of two critical papers in developing our understanding of the atom: 1) all three parts of Bohr’s landmark work marking the definitive break from using classical physics at the atomic level, often cited as the foundation of our modern understanding of the atom; 2) both parts of Moseley's..... More

FIRST EDITION IN SCARCE ORIGINAL WRAPPERS OF CLAUSIUS’ INTRODUCTION OF THE TERM ‘ENTROPY’ AND THE CULMINATION OF HIS WORK ON THE SECOND LAW OF THERMODYNAMICS; PRECEDES THE PUBLICATION IN ANNALEN DER PHYSIK. More

FIRST EDITION, FIRST ISSUE IN ORIGINAL BOARDS of Dalton’s first book; one of the foundational works in meteorology. More

FOUR AUTOGRAPH LETTERS with good content by Humphry Davy to his close friend and patron Davies Gilbert. More

FIRST EDITION OF THE FIRST TEXTBOOK OF PHYSIOLOGY. More

EINSTEIN OFFERS STRONG AND PRESCIENT WORDS OF ENCOURAGEMENT TO THE LEADER OF THE NAACP IN THE FIGHT AGAINST RACISM AND SEGREGATION IN THE UNITED STATES. 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

VERY RARE FIRST EDITION OF AN IMPORTANT DOCUMENT OF 20TH-CENTURY JEWISH INTELLECTUAL AND CULTURAL HISTORY. More