Wikimedi'Òc

Stencilled sign, "USS" (United States Steel Corporation) and "Christy Park Plant The Billy Mitchell first 1000 LB. aerial bomb July 1920" at Soldiers and Sailors National Military Museum and Memorial, Pittsburgh on 24 August 2010.jpg - Daderot

Trinity Bomb Replica and Display Plaque,Hill Aerospace Museum, Ogden Utah April 20th 2011.JPG - Drake411

Canister from a Confederate bomb.jpg - Fæ

Enemy Activities - Preparedness-Day Bomb - San Francisco - Preparedness day bomb, San Francisco, California. Back of clock of infamous bomb - NARA - 31478269.jpg - US National Archives bot

Enemy Activities - Preparedness-Day Bomb - San Francisco - Preparedness day bomb, San Francisco, California. Fragments found by police after explosion - NARA - 31478279.jpg - US National Archives bot

Enemy Activities - Preparedness-Day Bomb - San Francisco - Preparedness Day bomb, San Francisco, California. Bomb reconstructed by police from fragments gathered at Market and Stewart Streets - NARA - 31478275.jpg - US National Archives bot

Enemy Activities - Preparedness-Day Bomb - San Francisco - Preparedness Day Bomb, San Francisco, California. The clock of the infamous bomb - NARA - 31478259.jpg - US National Archives bot

Enemy Activities - Preparedness-Day Bomb - San Francisco - Fragments of the Preparedness Day bomb at San Francisco, California gathered by the police after the explosion - NARA - 31478281.jpg - US National Archives bot

Enemy Activities - Destruction by Enemy in U.S. - Preparedness Day Bomb, San Francisco, California. Fragments of the destructive bomb collected by police after the explosion - NARA - 31478144.jpg - US National Archives bot

Adding Dry Chemicals to Bombs - DPLA - 2e2d49cc2f00e6dde7d5bc8ada61b017.jpg - DPLA bot