John Hay was President Lincoln's personal secretary, a position that began nearly five decades of public service. A diplomat who served multiple Administrations from Lincoln to Roosevelt, he was a central figure in defining the U.S. foreign policy that would be the basis of the United States role on the world stage in the twentieth century.This is original content based on research by The History Guy. Images in the Public Domain are carefully selected and provide illustration. As very few images of the actual event are available in the Public Domain, images of similar objects and events are used for...