Gripping photographs and text show hippies protesting the Vietnam War, astronauts walking on the moon, and Martin Luther King, Jr., leading the way to equal rights for African-Americans. These are just a few powerful images from the 1960s. It was an unsettling time for America. Soldiers battled in the jungles of Southeast Asia. Inspiring leaders fell victim to assassins' bullets. A crisis over Soviet missiles pushed the world toward nuclear war. Yet...