Chisholm directed about 59 doctoral dissertations, thus making him perhaps the third most prolific producer of philosophy PhDs in American history. Many of his students went on to have distinguished careers of their own. If we consider the class containing Chisholm’s students and the students of those students, it becomes obvious that through his teaching, Chisholm influenced a remarkable number of philosophers. In addition, many of Chisholm’s colleagues and friends turned their attention to Chisholm’s work.