In August 1945, the US used atomic bombs on Japan, killing over 100,000 people. Truman didn't actually see the petition before he ordered the bombs to drop, according to the Atomic Heritage Foundation. Read the full petition from the Manhattan Project scientists and their names (provided by Szilard biographer Gene Dannen) below. The liberation of the atomic power which has been achieved places atomic bombs in the hands of the Army. All the resources of the United States, moral and material, may have to be mobilized to prevent the advent of such a world situation.

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Persons: Weeks, Harry Truman, Leo Szilard, Szilard, Edward Teller, J, Robert Oppenheimer, Teller, Oppenheimer, Truman didn't, Adolf Hitler's, Hitler, Emilio Segrè, Gene Dannen, Truman, United States — Organizations: Manhattan Project, Service, National Archives Museum, Chicago Met Lab, Manhattan, Los Alamos Laboratory, Atomic Heritage Foundation, OF, UNITED STATES, Army, United States Locations: Japan, Wall, Silicon, United States, Hiroshima, Nagasaki, Los Alamos , New Mexico, Los Alamos, Los, Alamos, Manhattan, Germany