Includes: Investigations on the Theory of the Brownian Movement. Green cloth lettered in white, dust jacket. Jacket price-clipped. London: Methuen, [1926]. * Investigations on the Theory of the Brownian Movement. Green cloth lettered in gilt. Erasure on title page. London: Methuen, [1926] The Meaning of Relativity. Brown cloth. First Edition. London: Methuen, [1922]. * The Meaning of Relativity. Brown cloth. Second Edition, with new material. Princeton: Princeton University Press, 1946. * The Principle of Relativity (With H.A. Lorentz and others). Red cloth. Faded and spotted. First Edition. London: Methuen, [1923]. Together 5 volumes.