Over the course of Bob Tobin's time at Clark University, he established a tradition of taking at least one group photo of every class he taught. The first two semesters of this tradition were conducted by noted photographer Stephen DiRado as part of his Classroom Series. The rest of the photos were taken by Bob. Altogether, the photos available in this series cover 2009 through 2016.
Stephen DiRado's photographs are posted here with his permission.