Visual memories, especially those of boyish vintage, tend to be inexact but I am pretty confident of this one: Joseph Grégoire de Roulhac Hamilton was a short, gnomish, balding figure, longtime chairman of the history department at the University of North Carolina, and founder of the great Southern Historical Collection there. And more to the present point, a valued friend and mentor to my father and his older brother, who had studied under him in the 1920s.