Louis Parsons in his late teens, circa 1946, standing beside an Aeronca Champion airplane, a typical trainer plane for aspiring post-war private pilots. Parsons Family Photograph hide caption

Brothers Isaac, Taylor and Zac Hanson have been playing together since 1992. Courtesy of the artist hide caption

Then-U.S. ambassador to Afghanistan Ryan Crocker (left) shakes hands with Afghan President Hamid Karzai in 2011. During his 37 years as a diplomat, Crocker served as ambassador to six Muslim countries. AP hide caption

The Beatles pose in Liverpool's Derby Square in February 1963 — the year, according to author Colin Fleming, that yielded the band's most definitive work. Michael Ward/Getty Images hide caption