Laura Ingalls Wilder entertained generations of children with her Little House series, which was loosely based on her family's pioneering life. Her memoir, Pioneer Girl, was published in 2014. South Dakota State Historical Society hide caption

itoggle caption South Dakota State Historical Society

Jack Mandelbaum, a Holocaust survivor from the Polish city of Gdynia, poses in front of a photograph showing him as a youth. Tobias Schwarz/AFP/Getty Images hide caption

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Frank Sinatra captured by photographer William "PoPsie" Randolph during a 1943 concert. Author Ben Yagoda points to Sinatra as one of the interpreters who helped revive the Great American Songbook. William "PoPsie" Randolph/Courtesy of Riverhead hide caption

itoggle caption William "PoPsie" Randolph/Courtesy of Riverhead

President Dwight Eisenhower delivers his State of the Union address before a joint session of the 86th Congress in 1959. Behind him are Vice President Richard Nixon (left) and Speaker of the House Sam Rayburn. AP hide caption

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David Oyelowo portrays Rev. Martin Luther King Jr. in Selma. He says his experience growing up in Nigeria, without experiencing being a minority, helped him approach the job of playing such an iconic figure with less baggage than an American actor might. Atsushi Nishijima/Paramount Pictures/AP hide caption

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Actor, playwright and composer Noel Coward rehearses for a show in 1951. A rare recording of Coward introducing his play Peace in Our Time is just one of the millions of sounds and recordings the British Library is looking to preserve. Jimmy Sime/Getty Images hide caption

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Suzan Shown Harjo points to a signature on Treaty K at the National Archives. The document will be on display in 2016 at the Smithsonian's National Museum of the American Indian for an exhibit on treaties curated by Harjo. James Clark/NPR hide caption

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