Albert Einstein
Relativity, the Special and General Theory
Hardcover
(Peter Smith March 15, 1931)
, Reprint of 1920 Henry Holt edition edition
This is a 1931 reprint and translation of the 1920 original. The frontispiece is a sketch of Einstein, and Einstein himself writes in his short preface: "I have purposely treated the empirical physical foundations of the theory in a 'step-motherly' fashion, so that readers unfamiliar with physics may not feel like the wanderer who was unable to see the forest for trees."