After establishing the Regional Science Association, Walter Isard’s next move was to develop a Regional Science Department. When Walter vacated MIT, he invited Benjamin H. Stevens to join his move to the University of Pennsylvania. During the early years at Penn, while Walter was out and about proselytizing, Ben minded the home front. Herein, chapter authors Lahr and Smith establish that it was Ben who grew the current global culture among regional scientists. While they recognize Ben’s wide-ranging research interests, they focus on just two core contributions: the heritage of the Herbert-Stevens model—an attempt to make Alonso’s model more practical—and his improvements to regional and multi-regional input-output modeling. They weave a story that gives some insight into this scholar through the words of many of his closest colleagues. It concludes by confirming Ben’s love for regional science, regional scientists, and jazz.