Bob Motley, 91, seen here in an undated photo, is the last surviving Negro League umpire. Motley Family Collection hide caption

itoggle caption Motley Family Collection

News outlets in 1962 paired this image of injured police officers with a story about the aftermath of a riot in a St. Louis suburb. Proquest Historical Newspapers Archive hide caption

itoggle caption Proquest Historical Newspapers Archive

President Gerald Ford and First Lady Betty Ford, with Jack and Susan Ford at their Alexandra, Va. home on August 12, 1974. The Ford family lived there for ten days until the executive mansion was ready. David Hume Kennerly/Getty Images hide caption

itoggle caption David Hume Kennerly/Getty Images

This installation at the Tower of London will ultimately feature 888,246 ceramic poppies, honoring the soldiers from Britain and the British colonies who died in World War I. Rich Preston/NPR hide caption

itoggle caption Rich Preston/NPR

The Titan II intercontinental-range missile, pictured in 1965, sits ready for launch on its 150-feet-deep underground launchpad. "The one warhead on a Titan II had three times the explosive force of all the bombs used by all the armies in the second world war combined — including both atomic bombs," says investigative reporter Eric Schlosser. Keystone/Getty Images hide caption

itoggle caption Keystone/Getty Images