Letter from Secretary of War Henry Stimson to President Truman, informing him about the atomic bomb.
April 24, 1945
Dear Mr. President,
I think it is very important that I should have a talk with you as soon as possible on a highly secret matter.
I mentioned it to you shortly after you took office but have not urged it since on account of the pressure you have been under. It, however, has such a bearing on our present foreign relations and has such an important effect upon all my thinking in this field that I think you ought to know about it without much further delay.
Secretary of War
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