National Geographic : 1966 Jan
Profiles of the Presidents: The last of five articles* I-A _J. Fearsome fireball of a 1952 hydrogen test explosion, spawning an ominous mushroom cloud, symbolizes the perils of the Atomic Age. The atom's annihilating force, unleashed during Franklin D. Roosevelt's Administration, has challenged the powers of every subse quent President in a tireless search for peace. Yet the "fearful engines of atomic might,"