Other
Nuclearfiles.org: Chronology on Decision to Bomb
This detailed chronology of the events and communication of 1945-1946 shows Truman's role in the process of the decision to drop the world's first atomic bomb used in warfare upon Hiroshima and then the second upon Nagasaki. Also...
Khan Academy
Khan Academy: The Manhattan Project and the Atomic Bomb
Discusses the Manhattan Project of the United States which worked on developing nuclear weapons during World War II. It led to the two atomic bombs that were dropped on Japan in August 1945, ending the war with Japan.
Other
Nuclearfiles.org: Truman and the Atom Bomb
Read background information about Harry Truman and the development of the atomic bomb prior to his presidency. Includes excerpts from official documents and conversations during the Truman Administration.
National Cable Satellite Corporation
C Span Classroom: World War Ii the Decision to Use the Atomic Bomb
This video provides Lt. Col. Grant Weller, who describes the decision of the United States to use the atomic bomb on Japan to end World War II. Student questions are provided to assess their understanding of the information.
Harry S. Truman Library and Museum
Harry S. Truman Library & Museum: Truman Biography
A very easy-to-read biographical sketch of Harry S. Truman. Includes suggestions for further reading.
Harry S. Truman Library and Museum
Tpml: Truman and the Bomb, a Documentary History
This site offers a comprehensive list of primary source documents from Harry S. Truman regarding the Potsdam Conference and decision to use atomic weapons.
Digital History
Digital History: The Decision to Drop the Bomb [Pdf]
The day before the bombing of Pearl Harbor, President Franklin Roosevelt gave the go-ahead to scientists to develop an atomic bomb. This site gives a good overview of the war in the Pacific against Japan, the increasing successes of the...
Other
Mr. Dowling's Passport: Harry Truman's Decision
Read about Harry Truman and his decision to drop atomic bombs on Japan which ultimately ended World War II.
Harry S. Truman Library and Museum
Harry S. Truman Library & Museum
Everything you wanted to know and more about Harry S. Truman, from biographical information to love letters.
Siteseen
Siteseen: American Historama: The Atomic Bomb
Provides interesting information, history, and facts on the Atomic Bomb and its use during WWII.
Siteseen
Siteseen: American Historama: Hiroshima and the Atomic Bomb
Discussion of the effects of the atomic bomb on Hiroshima and the end of World War II.
Harry S. Truman Library and Museum
University of Missouri Columbia: Truman and the Bomb
This site from the University of Missouri-Columbia offers a comprehensive list of primary source documents from Truman regarding the Potsdam Conference and decision to use atomic weapons.
The White House
The White House: Biography of Harry S. Truman
Biography provides interesting facts about the thirty-third president of the United States, Harry S. Truman. A black and white photograph is included.
Independence Hall Association
U.s. History: The Decision to Drop the Bomb
Was it necessary to drop the atomic bomb on Japan in order to save lives? Were the consequences worse than the waiting for a surrender of Japan? Read this discussion of the decision to drop the bomb, find out about the possible motives...
Harry S. Truman Library and Museum
Harry S. Truman Library & Museum: Truman 4 Kids
A great place for young students to start learning about the life of President Harry S Truman. Find out what he was like as a kid.
Nobel Media AB
The Nobel Prize: The Development and Proliferation of Nuclear Weapons
Read about how the atomic bomb was first developed, starting the nuclear arms race. As nuclear weapons proliferated, so did apprehension. A Non-Proliferation Treaty was released in 1968, and governments began to sign on to it. Green...
Digital History
Digital History: The Aftermath of the Decision [Pdf]
A touching and horrifying description of the devastation caused by the dropping of atomic bombs on Hiroshima and Nagasaki, which brought about the surrender of Japan in World War II. Suggested student exercises accompany the information....