Photographer unknown2018-09-212018-09-211923http://172.16.52.76:80/cdm/ref/collection/coll8/id/155https://hdl.handle.net/20.500.12111/1121In Leiden (Netherlands), photograph of (front row from l. to r.): Arthur S. Eddington and Hendrik A. Lorentz, and, in the back row (l. to r.): Albert Einstein, Paul Ehrenfest, and Willem de Sitter.B&WPermission to use this image must be requested from the Institute's Archives. Please contact archives@ias.edu.Eddington, Arthur Stanley, Sir, 1882-1944Ehrenfest, Paul, 1880-1933Einstein, Albert, 1879-1955Lorentz, H. A. (Hendrik Antoon), 1853-1928Sitter, Willem deImage