Thomas Hamm is Emeritus Professor of History and Quaker Scholar in Residence at Earlham College, Richmond, Indiana, where he retired after 36 years on the faculty in 2023. He is the author of several books on Quaker history, including, most relevant to this topic, The Transformation of American Quakerism: Orthodox Friends, 1800-1907, and a number of book chapters and articles. He is a lifelong Friend and currently is presiding clerk of the New Association of Friends.