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August 6, 1951 TRUMAN Page 2. HARRY ARCHIVES AND TISSARY U.S. RECORDS SERVICE" BOVERN WENT The bomb was dropped on August 6, 1945. The President said that he told Stalin during the Potsdam Con- ference that the United States had perfected a powerful new weapon. He did not tell Stalin that it was an atomic bomb or weapon. He said that Stalin did not seem impressed particularly but he smiled and said that was fine. (Admiral Leahy also told of this in his book, "I Was There".) The announcement that the bomb had been dropped was made by me at the White House on August 6th with the release of a statement by the President which had been prepared in advance and gone over by the President and Stimson at Potsdam. The President was on board the cruiser AUGUSTA returning from Potsdam when the bomb was dropped at Hiroshima. (The story of the manner in which the President was informed is given by Leahy in his book.) The President also talked of the great responsibility that rested upon him in making the decision to drop the bomb on Japan. The President talked also about later atomic development and its potentialities for good and something on the latest tests at Eniwetok. I also asked him about the September 5, 1945, message to Congress containing his legislative program and famous twenty-one points. I told him I was going to get some of the background on that. I asked him if Judge Rosenman had not done much of the work on it and he said he had, that Rosenman and he sat down together and he told Rosenman he wanted to get together all of the plans and ideas that Roosevelt had in mind and as a result of this the message was worked out. (During the period from April 12th on there had been much pulling and hawing among the various people who had been associated with Roosevelt or in the Government -- the New Dealers and Liberals as against those who were more conservative as to which path the new President was going to take. Both sides were claiming him as their own and some of those close to the President felt that his philosophy of government and his position should be clearly de- fined and set forth. The message made this entirely clear.)

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