Moderne Probleme der Physik

Opticks

Isaac Newton, also an audiobook

Relativity : the Special and General Theory

Albert Einstein

Relativity: The Special and General Theory

Albert Einstein

Philosophiae Naturalis Principia Mathematica

Isaac Newton

Latin

Relativity: The Special & the General Theory

Albert Einstein

The Meaning of Relativity

Albert Einstein

Science and hypothesis

Henri Poincaré

The New Physics and Its Evolution

Lucien Poincaré, also an audiobook

The Theory of Spectra and Atomic Constitution: Three Essays

Niels Bohr

The Einstein Theory of Relativity: A Concise Statement

H. A. Lorentz

A Brief History of Element Discovery, Synthesis, and Analysis

Glen W. Watson

The Theory of Heat Radiation

Max Planck

Utility of Quaternions in Physics

Alex. McAulay

LRL Accelerators, The 184-Inch Synchrocyclotron

Lawrence Radiation Laboratory

Expériences et observations sur l'électricité faites à Philadelphie en Amérique

Benjamin Franklin

French

The Machinery of the Universe: Mechanical Conceptions of Physical Phenomena

A. E. Dolbear

Elementary Principles of Statistical Mechanics

J. Willard Gibbs

Space—Time—Matter

Hermann Weyl

Five of Maxwell's Papers

James Clerk Maxwell

On a Dynamical Top, for exhibiting the phenomena of the motion of a system of invariable form about a fixed point, with some suggestions as to the Earth's motion

James Clerk Maxwell