25 C.F.R. § 83.6 : Indians — BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR — TRIBAL GOVERNMENT — PROCEDURES FOR FEDERAL ACKNOWLEDGMENT OF INDIAN TRIBES — GENERAL PROVISIONS — What are the Department's duties?

(a) The Department will publish in the FEDERAL REGISTER, by January 30 each year, a list of all Indian tribes which the Secretary recognizes to be eligible for the special programs and services provided by the United States to Indians because of their status as Indians, in accordance with the Federally Recognized Indian Tribe List Act of 1994. The list may be published more frequently, if the Assistant Secretary deems it necessary.
(b) OFA will maintain guidelines limited to general suggestions on how and where to conduct research. The guidelines may be supplemented or updated as necessary. OFA will also make available examples of portions of documented petitions in the preferred format, though OFA will accept other formats.
(c) OFA will, upon request, give prospective petitioners suggestions and advice on how to prepare the documented petition. OFA will not be responsible for the actual research on behalf of the petitioner.

25 C.F.R. § 83.6

80 FR 37887, 7/1/2015