Just after noon on September 16, 1920, as hundreds of workers poured onto Wall Street for their lunchtime break, a horse-drawn cart packed with dynamite exploded in a spray of metal and fire, turning the busiest corner of the financial center into a war zone. Thirty-nine people died and hundreds more lay wounded, making the Wall Street explosion the worst terrorist attack in U.S. history until the Oklahoma City bombing. In The Day Wall Street Exploded,...