Original Photograph of Albert Einstein, with Assistants Peter Gabriel Bergmann and Valentine Bargmann

1940. Original photograph. Fine condition. Image measures 8 3/4 x 6 3/4". Matted, on heavy white cardstock measuring a total of 19 1/2 x 15 1/2". This photograph shows Albert Einstein with his two research assistants, physicists Peter Gabriel Bergmann (1915-2002, middle) and Valentine Bargmann (1908-1989, right), at the Institute for Advanced Study (IAS) in Princeton, New Jersey. The photo is known to have been taken on October 2nd, 1940, by Hungarian photographer Lucien Aigner (1901-1999). The image shows the pioneering physicist staring contemplatively off into the distance, while the other two men review papers at a desk, and was taken during the period when they were working on the Kaluza–Klein (KK) unified field theory and other cutting edge theoretical physics problems of the day. It was this same year that Einstein became naturalized as a US citizen. Aigner's many photos of Einstein were among the most famous images taken by the photographer, and were said to be among the physicist's favorite photos of himself. The image is in pristine condition, with a few minor smudges and some sticker residue to the bottom of the mat. *Source: Information obtained via the Albert Einstein Archives, at the Hebrew University, Jerusalem.