Photograph caption. Memories of Terry Erwin and his academic family A Earnest conversation between John Spence and Terry at the home of David and Bev Kavanaugh. December 1981. Photograph: D. Maddison B Terry (indicated in the white rectangle in left-center of the photograph) among the students of G. E. Ball on the occasion of Prof. Ball’s retirement symposium in Edmonton. Spring 1992. Photograph: courtesy of D. Kavanaugh.