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Albert Einstein · Year

1940

Albert Einstein records dated 1940, drawn directly from the World History Database source collection.

Albert Einstein photographed in Princeton in 1947
Albert Einstein, Princeton, 1947. Photograph by Oren Jack Turner; Library of Congress image with no known restrictions. Wikimedia Commons source.

Second Roosevelt Letter

7 March 1940 · Princeton · United States of America · Nuclear

Writes again to President Roosevelt urging stronger attention to uranium research developments.

Third Roosevelt Letter

25 April 1940 · Princeton · United States of America · Nuclear

Sends another letter to Roosevelt concerning the need for effective action on uranium research.

United States Citizenship

1 October 1940 · Trenton · United States of America · Physics

Becomes a United States citizen while retaining Swiss citizenship.

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