FIRST PRINTINGS OF THE FOUNDATIONAL PAPERS ON THE BIG BANG AND THE ORIGIN OF THE UNIVERSE. Including a fine copy of the famous “Alpha-Beta-Gamma” paper. More about The Origin of Chemical Elements. WITH: Expanding Universe and the Origin of Elements. WITH:...

FIRST EDITION of Becquerel's "definitive work", containing the full account of his investigations and discovery of radioactivity. PMM 393. Dibner 163. More about Recherches sur une Propriété Nouvelle de la Matière; Activité Radiante Spontanée ou...

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 about On the Constitution of Atoms and Molecules (Bohr). WITH: The High-Frequency Spectra of the...

FIRST EDITION IN ORIGINAL WRAPPERS of the presentation of "Bose-Einstein statistics." More about Plancks Gesetz und Lichtquantenhypothese [Planck’s Law and Light Quantum Hypothesis]. WITH:...

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

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 about Mémoire sur un classement naturel des corps simples ou radicaux appelé vis tellurique. WITH:...

SCARCE FIRST EDITION IN ORIGINAL WRAPPERS OF ARTHUR EDDINGTON’S REPORT CONFIRMING EINSTEIN’S GENERAL THEORY OF RELATIVITY. More about A Determination of the Deflection of Light by the Sun’s Gravitational Field, from Observations...

EINSTEIN OFFERS STRONG AND PRESCIENT WORDS OF ENCOURAGEMENT TO THE LEADER OF THE NAACP IN THE FIGHT AGAINST RACIAL SEGREGATION AND DISCRIMINATION IN THE UNITED STATES. More about Autograph Letter Signed [ALS] Denouncing Racial Segregation

AN IMPORTANT SIGNED LETTER (in English) by Einstein, revealing his reservations of associating with communism even in the fight against fascism. More about Typed Letter Signed

THE BIRTH OF GENERAL RELATIVITY: FIRST PRINTING IN RARE ORIGINAL WRAPPERS OF ONE ONE EINSTEIN’S MOST IMPORTANT PAPERS; containing the beginning of general relativity, the derivations of the equivalence principle, gravitational redshift, and the gravitational bending of light. More about Über das Relativitätsprinzip und die aus demselben gezogenen Folgerungen [On the Relativity...

RARE FIRST EDITION IN ORIGINAL WRAPPERS OF THE REPORTS FROM THE HISTORIC FIRST SOLVAY CONFERENCE, “THE FIRST INTERNATIONAL CONFERENCE IN PHYSICS EVER ORGANIZED” AND A CRITICAL MOMENT IN THE BIRTH OF QUANTUM PHYSICS. More about La Theorie du Rayonnement et les Quanta. Rapports et Discussions de la Reunion Tenue a Bruxelles...

EXTREMELY RARE AND BEAUTIFUL SIGNED PHOTOGRAPH OF EINSTEIN BY FREDERICK PLAUT. SIGNED ON THE IMAGE BY EINSTEIN: “A. Einstein 54”. More about Photograph Signed

THE FIRST INTRODUCTION OF EINSTEIN’S GENERAL RELATIVITY TO THE ENGLISH-SPEAKING WORLD. The groundbreaking first edition (1918), with the second edition (1920), containing the account of Eddington’s 1919 expedition proving Einstein’s theory, both in original wrappers. More about Report on the Relativity Theory of Gravitation