Caltech and Princeton University press release fifteenth volume of Einstein's collected papers

Volume 15: The Berlin Years: Writings & Correspondence, June 1925-May 1927, is the latest volume published as a collaboration between Caltech's Einstein Papers Project, Princeton University Press, and the Albert Einstein Archives at the Hebrew University of Jerusalem. It covers Einstein's writings and correspondence on the new quantum theories emerging in the late 1920s, his unwitting collaboration with an academic fraud, and letters to his teenage sweetheart. The almost 100 writings by Einstein, of which a third have never been published, and the more than 1,300 letters contained in this latest volume, show Einstein's immense productivity and hectic pace of life.