This primary source comes from the General Records of the Department of Energy.
National Archives Identifier:
558570Full Citation: ['Jumbo' atomic device being positioned for 'Trinity' test at Alamogordo, New Mexico.]; 1945; General Records of the Department of Energy, Record Group 434. [Online Version, https://www.docsteach.org/documents/document/[jumbo-atomic-device-being-positioned-for-trinity-test-at-alamogordo-new-mexico], January 12, 2025]