The Collected Papers of Albert Einstein

http://einsteinpapers.press.princeton.edu/

Princeton University Press, Hebrew University, and the Einstein Paper Project at the California Institute of Technology have collaborated to create the Digital Einstein Papers, which is an open-access site for The Collected Papers of Albert Einstein. The Digital Einstein Papers feature a number of documents in the Einstein collections at Hebrew University and CalTech, including scientific papers, diaries, lecture notes, interviews, and correspondence. As of this write-up, the collection features most of Einstein's papers published through the year 1923. The papers are arranged chronologically into thirteen volumes. Visitors may choose to read the "black volumes" (in original German with English annotations) or the "white volumes" (completely translated into English). New visitors may want to start by watching a helpful video overview of the collection by editor Diana Kormos Buchwald, available in the about section. Buchwald, who is also a professor of history in the humanities and social sciences, describes some of the highlights in the collection. All documents are available in print-friendly format

via https://scout.wisc.edu/archives/r49218/digital_einstein_papers