New York: Dover, 1990. Softcover. 8vo., Five early papers evolve the theory that won Einstein a Nobel Prize, including 'On the Theory of the Brownian Movement' and 'A New Determination of Molecular Dimensions.' Originally published by Methuen in London in 1926.

New York: Dover, 2010. Softcover. 8vo., Reprint. 56 pp. Originally published by E.P. Dutton in 1923. Contains two lectures/addresses by the author: one delivered on May 5, 1920 at the University of Leyden and the other on January 27 1922 to the Prussian Academy of sciences in Berlin in relation.....