Collects several historic scientific papers that served to establish quantum theory and fundamentally alter the scientific understanding of physical reality and the universe.

On the law of distribution of energy in the normal spectrum /Max Planck -- On a heuristic viewpoint concerning the production and transformation of light / Albert Einstein -- The Atomic theory of matter / Max Planck -- The scattering of alpha and beta particles by matter and the structure of the atom / Ernest Rutherford -- On the constitution of atoms and molecules / Niels Bohr -- The structure of the atom / Niels Bohr -- Excerpts from The physical principles of the quantum theory / Werner Heisenberg -- The development of quantum mechanics / Werner Heisenberg -- Quantisation as an Eigenvalue problem, parts 1-4 / Erwin Schrodinger -- The quantum theory of the electron / Paul A.M. Dirac -- On the connection between spin and statistics / Wolfgang Pauli -- Exclusion principle and quantum mechanics / Wolfgang Pauli -- Statistical interpretation of quantum mechanics / Max Born -- The present situation in quantum mechanics / Erwin Schrodinger -- Can quantum-mechanical description of physical reality be considered complete? / Albert Einstein, Boris Podolsky, and Nathan Rosen -- Can Quantum-mechanical description of physical reality be considered complete? / Niels Bohr -- A suggested interpretation of the quantum theory in terms of 'hidden' variables 1 / by David Bohm -- A suggested interpretation of the quantum theory in terms of 'hidden' variables 2 / by David Bohm -- On the Einstein-Podolsky-Rosen paradox / John Bell -- The quantum theory of the emission and absorption of radiation / Paul A.M. Dirac -- The Lagrangian method in quantum mechanics / Paul A.M. Dirac -- On quantum electrodynamics / Paul A.M. Dirac, V.A. Flock, and Boris Podolsky -- Foundations of the new field theory / Max Born and Leopold Infeld -- Electron theory / J. Robert Oppenheimer -- Fine structure of the hydrogen atom by a microwave method / Willis Lamb and Robert Rutherford -- The electromagnetic shift of energy levels / Hans Bethe -- On a relativistically invariant formulation of the quantum theory of wave fields / Sin-Itiro Tomanaga -- Space-time approach to quantum electrodynamics / Richard Feynman -- The theory of positrons / Richard Feynman -- The radiation theories of Tomonaga, Schwinger and Feynman / Freeman Dyson -- Problems of atomic dynamics / Max Born -- Excerpts from thirty years that shook physics (chapters 1 and 4) / George Gamow -- Excerpts from lectures on quantum mechanics by Paul A.M. Dirac.