As the College of Letters (COL) celebrates its 50th anniversary, we asked Ethan Kleinberg, associate professor of history and letters, director of the COL, about his life in two departments, his views on interdisciplinary teaching, how this impacts his own scholarship, and the future of the COL. Q. How did you end up with a joint appointment in the College of Letters and History Department? EK: As an undergraduate at U.C. Berkeley I created my own curriculum combining philosophy, history and religion as a “Humanities Field Major.” In graduate school at UCLA I combined work in History and Comparative Literature…