Dating to the 17th century, this Jewish cemetery may be the final resting place of Heinrich Mueller, the head of Adolf Hitler's Gestapo. A German historian says he has traced Mueller to the cemetery. John MacDougall/AFP/Getty Images hide caption

itoggle caption John MacDougall/AFP/Getty Images

Invader? No, it's a man dressed as one in 1988. He was in Grovers Mill, N.J., at a 50th anniversary celebration of The War of the Worlds broadcast. Chris Lischy/AP hide caption

itoggle caption Chris Lischy/AP

Winston Churchill opens the new headquarters of a Royal Auxiliary Air Force squadron at Croydon in 1948. Central Press/Hulton Archive/Getty Images hide caption

itoggle caption Central Press/Hulton Archive/Getty Images

A young girl stands in the doorway of a home in Uttar Pradesh, India. The markings on the door show that a polio immunization team vaccinated children in the home. Alyce Henson/Courtesy of Rotary International hide caption

itoggle caption Alyce Henson/Courtesy of Rotary International

Harold Lee's son Henry, perched on the roof of a camera truck, helped produce and import Chinese-language films from Hong Kong and China in the late 1940s. Courtesy of the Lee Family hide caption

itoggle caption Courtesy of the Lee Family

Miguel Piñero of the Nuyorican literary movement and poet Sandra Maria Esteves on the train in New York City in 1977. Bolivar Arellano hide caption

itoggle caption Bolivar Arellano

Ava Gene's, a Roman-inspired restaurant in Portland, Ore., incorporates colatura, a modern descendant of ancient Roman fish sauce, into several of its dishes. Deena Prichep/NPR hide caption

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This poster from 1904 describes Charles Jamieson as a petty thief, crap shooter, "glib talker and general all-around crook and hobo." An online business helps reunite people like Jamieson's descendants with such pieces of their family history. Joy Shivar hide caption

itoggle caption Joy Shivar