Since it was first introduced to American universities some sixty years ago, Korean Studies in the United States has developed from an obscure area of interest into a robust field of knowledge encompassing numerous disciplines on many campuses across the country. Focusing on the discipline of history, this article traces the emergence of Korean Studies in the 1950s, the evolution of the field and the changing backgrounds of American scholars working on Korea in the 1960s to 1980s, and the rapid growth of Korean Studies since the early 1990s. Although the field is still too small to be divided into clear “schools,” several institutions and individuals have been key leaders in US Korean studies, and a number of important issues have been subjects of intense debate: these include the question of “internal development” in late Joseon, “colonial modernity” during the period of Japanese occupation, and “revisionism” and “post-revisionism” in the study of the Korean War. The field is now in a period of rapid growth and change, and new research areas are emerging that will likely dominate the field in the years ahead.