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• 2008-05-03 00:27 Georgewilliamherbert 640×450× (53180 bytes) {{Information |Description=A photograph of the Mark 26 thermonuclear bomb |Source=US Department of Energy |Date= |Author= |Permission=No copyright - product of US Government |other_versions= }} Intermediate source: [http://nuclearweaponarchive.org/Usa/We