(SCIENTISTS.) EINSTEIN, ALBERT. Brief Autograph Letter Signed, to Fran R. Schiff (physicist Leonard Schiff's wife), in German, graciously thanking

(SCIENTISTS.) EINSTEIN, ALBERT. Brief Autograph Letter Signed, to Fran R. Schiff (physicist Leonard Schiff's wife), in German, graciously thanking them for the gift of a watch. 1/2 page, single 4to sheet, California Institute of Technology stationery; matted with a photograph of Einstein, Leonard Shiff and their wives. Pasadena,15 February 1931