25 C.F.R. § 179.6 Notice of termination of life estate.
Title 25 - Indians
Upon receipt of a renunciation of interest or notice of death of an Indian or non-Indian who died possessed of a life estate in Indian land, the Superintendent having jurisdiction shall file a copy of the renunciation or death certificate or other evidence of death with the appropriate Bureau of Indian Affairs' Land Titles and Records Office for recording.
Title 25: Indians
PART 179—LIFE ESTATES AND FUTURE INTERESTS
§ 179.6 Notice of termination of life estate.