Louis de BROGLIE (1892–1987). Autograph letter, Neuilly-sur-Seine, February 8, 1957, to E. Szapiro in Toulouse; 2 oblong in-12 pages, stamped envelope. Regarding Albert Einstein. “When Einstein left Germany in 1933, the French government, at the suggestion of the Collège de France, created a special chair for him at this illustrious institution. Einstein could have held this chair if he had wanted to. But the United States had also offered him a chair at the Institute for Advanced Study in Princeton, and Einstein—perhaps because he did not speak French very easily—preferred to go to the United States, where he spent the rest of his life”…