Most of the chapters in Mundell's International Economics differ, owing to adaptation, from the original sources. The revisions yield valuable insights into the contributions made by the initial publications. In this paper we look only at the changes that take the form of elisions of material. These outtakes are amusing but demonstrate how Mundell was willing to either irritate or ignore his discussants. Issues raised by them are important enough to warrant our further consideration. In doing so we question both the validity and the interpretation of some of the conclusions in the Nobel-cited capital mobility paper.