Newspaper clippings of young Donnie Dunagan from the early '40s. Courtesy of Donnie and Dana Dunagan. hide caption

itoggle caption Courtesy of Donnie and Dana Dunagan.

Actor Jake Gyllenhaal stars in Southpaw, a new movie about a junior middleweight boxing champion who faces adversity. Scott Garfield/The Weinstein Company hide caption

itoggle caption Scott Garfield/The Weinstein Company

Willis Conover, an expert on jazz, broadcasts "Music USA" from his Voice of America studio in Washington in March 1959. AP hide caption

itoggle caption AP

Members of the New Horizons science team react to seeing the spacecraft's image of Pluto on Tuesday, before its closest approach. Bill Ingalls/NASA via AP hide caption

itoggle caption Bill Ingalls/NASA via AP