In April 1912, when the proceedings of the Columbus conference were published, Society membership had increased to 101 actives, about one-third of whom were women, and approximately the same number of non-native associates. By 1913, active members grew to the high point of nearly 230 individuals representing almost 30 tribes. Membership included Arthur Bonnicastle, (Osage), community leader; Gertrude Bonnin, (Yankton Dakota), educator and author; Rev. Benjamin Brave, (Oglala Lakota), minister; Estaiene M. DePeltquestangue, (Kickapoo); nurse; William A. Durant, (Choctaw), lawyer; Rev. Philip Joseph Deloria, (Onondaga), priest; Rev. John Eastman, (Santee Dakota), minister; Father Philip B. Gordon, (Chippewa), priest; Albert Hensley, (Winnebago); missionary; John Napoleon Brinton Hewitt, (Tuscarora), linguist and ethnographer; William J. Kershaw, (Menominee), attorney; Susan LaFlesche, (Omaha), physician; Francis LaFlesche, (Omaha), anthropologist; Rev. Delos Lone Wolf (Kiowa), minister; Louis McDonald, (Ponca); businessman; Luther Standing Bear, (Oglala Lakota), educator; Dennison Wheelock, (Oneida), musician, composer, lawyer; and Chauncey Yellow Robe, (Sicangu Lakota), educator.