This series consists primarily of Incoming and outgoing correspondence to and from the office of the secretary, which appears to have replaced the office of the superintendent as the director of the mission's affairs. Researchers will find in this series correspondence between the secretary and leaders of the Mennonite Board of Missions, Indian government officials, and non-Mennonite mission organizations. Also present here are the secretary's record book (1905-1915), which contains the earliest executive committee and business meeting minutes as well as a number of subject files.
Secretaries of the American Mennonite Mission include J. N. Kauffman, Aldine Carpenter Brunk, and J. D. Graber (1937-1944).