EVB2942611: American signal officers in the observatory of German Crown Prince Frederick William. The observation instruments were left behind by the Germans in their hasty retreat from the Marne. Montfaucon, France. World War I. Oct. 17, 1918, Unknown photographer, (20th century) / Bridgeman Images
EVB2942073: President Kennedy signing the Nuclear Test Ban Treaty which banned nuclear tests in the atmosphere, underwater and in space. First row: Senators Pastore, Fulbright, Aiken, Dirksen, Saltonstall, Kutchel, and VP Johnson. Second Row: Averell Harriman, Sen. Smathers, Sec of State Dean Rusk, Sen. Humphrey, William C. Foster, Sen. Cannon. Oct. 7, 1963 / Bridgeman Images