Colorado Superintendency of Indian Affairs
The Colorado Superintendency of Indian Affairs was established in 1861 . After the Superintendency was abolished in 1870, after which the agents reported directly to the Office of Indian Affairs in Washington, DC. Correspondence continued to be filed under "Colorado" until the filing system was changed in 1881, however.
Letters received by the Office of Indian Affairs from the Colorado Superintendency, 1861-1880, have been microfilmed by the National Archives as part of their Microcopy Number M234. Copies are available at the National Archives and at the Family History Library and its family history centers on their microfilm roll numbers 1660927 thru 1660944.
Hill, Edward E. The Office of Indian Affairs, 1824-1880: Historical Sketches. New York, New York: Clearwater Press, .
Hill, Edward E. (comp.). Guide to Records in the National Archives of the United States Relating to American Indians. Washington [District of Columbia]: U.S. Government Printing Office, 1981.
Historical Sketches for Jurisdictional and Subject Headings Used for the Letters Received by the Office of Indian Affairs, 1824-1880. National Archives Microcopy T1105.
Preliminary Inventory No. 163: Records of the Bureau of Indian Affairs. Washington, DC: