California Institute of Technology
Einstein Papers Project


Albert Einstein (1879–1955), one of the foremost scientists and public figures of the 20th century, revolutionized our views of time and space, matter and light, gravitation and the universe.

The Einstein Papers Project is engaged in one of the most ambitious scholarly publishing ventures undertaken in the history of science. The Collected Papers of Albert Einstein provides the first complete picture of Einstein’s massive written legacy.


Published Volumes

Online / On Paper

With the publication of its most recent Volume 16, The Collected Papers of Albert Einstein series now covers Einstein's life and work up to his 50th birthday. It presents, as annotated full text, 600 writings by Einstein and 4,000 letters written by and to him. An additional 4,500 documents appear in abstract.

Einstein Archives Online

A unique resource: You can access our database of 90,000+ records of all known Einstein manuscripts and correspondence and also search the full text of 2,000 digitized items.

Currently under reconstruction until further notice.



In Memoriam: Issachar Unna

Issachar Unna, 2016 at EPP Retreat

The EPP mourns the passing of our collaborator Issachar Unna, Professor Emeritus of Physics, Hebrew University, who was an editor, researcher, and friend.

Unna’s expertise in nuclear physics, quantum theory, history of modern physics, and the teaching of physics, coupled with his intimate knowledge of German, informed his meticulous reviews of the final drafts for Volumes 7, 9, 10, and 12 of The Collected Papers of Albert Einstein, and his contributions as Associate Editor on Volumes 13, 14, and 15.

A Jerusalem-born bibliophile, Unna was a passionate popularizer of science. He edited Hebrew translations of children’s books on Einstein, and of Einstein’s anthology Ideas and Opinions. In Israel he was a generous host to visiting colleagues. In Pasadena, he was an affable guest over the span of two decades. He will be missed by all of us. 10-15-2021

Photo Credit: Emily Araújo

News Archive