On September 26, 2024, I was honored to deliver the Eli Heckscher Memorial Lecture at the Stockholm School of Economics. I talked on the the theme of the American corporation in the twentieth cenury. The Heckscher lecture has been given anually since 2003 by a list of distinguished economists, including two Nobel Laureates. It is named in honor of Eli Heckscher (1879-1952), known to most economists for the Heckscher-Ohlin theorem in international trade, who was the founder of economic history in Sweden.