Leopold Infeld and Otto Nathan

Taken in Bern, Switzerland, photograph of physicist Leopold Infeld (left) and economist Otto Nathan. Nathan was designated by Albert Einstein as the executor of his estate and co-trustee (with Helen Dukas) of his literary property. The image is in postcard format and stamped on the back: "Alfred Rohrer, Photograph, Bern...Reproduktion Verboten." It's likely that this photograph was taken in conjunction with the conference entitled the "Jubilee of Relativity Theory" that was held in Bern in 1955.