There wasn't much to see in Bretton Woods in July 1944, when delegates from 44 countries checked into the sprawling Mount Washington Hotel for the United Nations Monetary and Financial Conference. Almost a million acres of New Hampshire forest surrounded the site; there were free Coca-Cola dispensers, but few other distractions.

In this scene of rustic isolation, 168 statesmen (and one lone stateswoman, Mabel Newcomer of Vassar College) joined in history's most celebrated episode of economic statecraft, remaking the world's...