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

EXTREMELY RARE FIRST EDITION OF THE FIRST WESTERN BOOK ON BUDDHISM. More

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

EINSTEIN ON THE CONCEPT OF PEACE: A POWERFUL AUTOGRAPH STATEMENT IN EXCEPTIONALLY LARGE FORMAT. 
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EINSTEIN RESPONDS TO A STUDENT, EXPLAINING A CENTRAL TENET OF RELATIVITY. More

FIRST EDITION OF THE MAGNIFICENT COMMANDINO EUCLID. THE DE-CHAMBRAY- MACCLESFIELD COPY. More

FEYNMAN OFFERS ADVICE AND ENCOURAGEMENT FOR A SCIENTIFIC ENDEAVOR. More

HEISENBERG PROVIDES HIS RECOLLECTIONS OF THE ORIGINS OF NIELS BOHR’S CONCEPT OF “COMPLEMENTARITY”. A UNIQUE ITEM, OF UTMOST IMPORTANCE FOR THE LIGHT IT SHEDS ON THE PHILOSOPHICAL FOUNDATIONS OF QUANTUM MECHANICS AS SEEN BY THE PIONEERS IN THE FIELD. More

THE FIRST COMPLETE COLLECTION OF THE 165 LETTERS OF ANTONI VAN LEEUWENHOEK THAT WERE PUBLISHED IN HIS LIFETIME (IN THE ORIGINAL DUTCH, AND PRECEDING THE FIRST COMPLETE LATIN EDITION BY FOUR YEARS); INCLUDING HIS LETTERS TO THE ROYAL SOCIETY DESCRIBING THE FIRST-EVER OBSERVATIONS OF BACTERIA, SPERM CELLS, AND OTHER MICROSCOPIC..... More

ADA LOVELACE’S PERSONAL ANNOTATED COPY OF CHARLES BABBAGE’S FIRST SIGNIFICANT PUBLICATION. A MAJOR MATHEMATICAL TEXT IMPORTANT FOR HER INTELLECTUAL DEVELOPMENT. 

WITH AT LEAST 35 INK ANNOTATIONS IN LOVELACE’S HAND – THE MAJORITY CORRECTIONS TO MATHEMATICAL EQUATIONS – AND AT LEAST 18 PENCIL ANNOTATIONS IN THE HAND OF HER TUTOR..... More

RARE 1726 THIRD EDITION OF NEWTON'S PRINCIPIA, THE LAST EDITION EDITED BY NEWTON AND THE BASIS FOR ALL SUBSEQUENT EDITIONS. ONE OF ONLY 1250 COPIES PRINTED. More

FIRST EDITION of arguably the most important source book for the works of the Greek mathematicians. The magnificent Horblit copy in contemporary (probably original) boards. More

VERY RARE FIRST EDITION OF RIEMANN’S DISSERTATION: “ONE OF THE MOST IMPORTANT ACHIEVEMENTS OF 19TH CENTURY MATHEMATICS,” “WHICH MARKED A NEW ERA IN THE DEVELOPMENT OF THE THEORY OF ANALYTIC FUNCTIONS.”. More