The Joseph Cook Papers, available at the Center for Western Studies, covers Cook's career as an Episcopal missionary to the Sioux Indians and includes correspondence and personal journals. The journals date between 1875 and 1902, whereas the incoming correspondence covers the years: 1868-1881 and 1902 (excl. 1879). The collection ends in 1902 with Joseph Cook's death. Among Cook's correspondents were: Samuel Hinman, J.J. Garvatt, S.C. Armstrong, Principal of Hampton Institute; Robert H. Clarkson, Missionary Bishop of Nebraska; William Hobart Hare, Missionary Bishop of Niobrara; William Welsh, President Episcopal Church; and H.B. Whipple, Bishop of Minnesota.
