1 page, 4to, on Einstein's personal embossed stationery. In German." /> EINSTEIN, Albert (1879-1955). Autograph letter signed ("A.E.") to the Ehrmann Family, Princeton, N.J., 21 March, n.d. [ca.1949]. <I>1 page, 4to, on Einstein's personal embossed stationery.</I> In German. | Christie's