He was at Fort Robinson when Crazy Horse died.

He was present at the burial, according to some accounts.

He spoke to various interviewers and researchers in the years after 1877, as the events of that period became the subject of historical inquiry.

His accounts of the death are part of the record.

His accounts of the burial — if he gave any that were specific — have not entered the public record in a form that identifies the location.

Whether this is because he didn’t give specific accounts, or because he gave accounts that were deliberately vague, or because specific accounts he gave were not preserved in the documentary record, is not established.