Roosevelt's reply: https://upload.wikimedia.org/wikipedia/commons/e/e7/Roosevelt-einstein-letter.png https://upload.wikimedia.org/wikipedia/commons/e/e7/Rooseve

Roosevelt's reply: https://upload.wikimedia.org/wikipedia/commons/e/e7/Roosevelt-einstein-letter.png https://upload.wikimedia.org/wikipedia/commons/e/e7/Roosevel... Source: https://en.wikipedia.org/wiki/Einstein%E2%80%93Szil%C3%A1rd_letter https://en.wikipedia.org/wiki/Einstein%E2%80%93Szil%C3%A1rd_...