745. ALBERT EINSTEIN (1879-1955) American physicist whose Theory of Relativity and studies of mass and energy relationships revolutionized the field of physics. T.L.S. in German, 1p, 4to., Princeton, NJ, June 14, 1954 on his blind embossed stationery. "It's my impression that you're absolutely right also in the fact that seawater contains all the rare materials the animal requires. It is remarkable that no one seems to have come up with this [idea] before". Fine.                 $2,500 - 3,500