One photograph contained in the Robert A. These images reveal the incredible power of the atomic bomb. Truman Library and Museum’s digital archives can open a window onto the bomb and Hiroshima’s fate through a remarkable series of photographs archived there. This single explosion brought the Second World War into its final phase and revealed to the world a new and devastating weapon. Forty-four seconds later, it exploded 1,900 feet above the city. WWII highlights from the Truman Library’s archives and collections Marching to Victory: The Bombing of HiroshimaĪt 8:15 AM on August 6, 1945, an American B-29 bomber opened its bay doors over the Japanese city of Hiroshima and released a solitary bomb. Past Recipients of the Truman Book Award.