Author: California Department of Corrections and Rehabilitation Credits: California Department of Corrections and Rehabilitation Licence: Public domain
Author: Department of Energy, Office of Public Affairs Credits: Taken from a Los Alamos publication (Los Alamos: Beginning of an era, 1943-1945, Los Alamos Scientific Laboratory, 1986.).
Author: U.S. Information Agency. Press and Publications Service. (ca. 1953 - ca. 1978) Credits: This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required.See Commons:Licensing. Licence: Public domain