Photographer unknown2018-09-212018-09-211950http://172.16.52.76:80/cdm/ref/collection/coll8/id/19https://hdl.handle.net/20.500.12111/1076In Princeton, New Jersey, Albert Einstein signs in for a symposium held in honor of Rudolf Ladenburg's retirement.B&WPermission to use this image must be requested from the Institute's Archives. Please contact archives@ias.edu.Einstein, Albert, 1879-1955Albert Einstein signs in at symposiumImage